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    I just built stands for my 4x4 flood tables out of ABS plastic from home depot. Off gassing worries the shit out of me. I am going to look for that little 3 on there for sure! Good info! <--2k grow rocking Purple Urkel X Sour Diesel(Platinum Purps)


      so what tubing is safe to use??? i dont have a hydro shop within driving distance


        Originally posted by BlueberryNutz View Post
        so what tubing is safe to use??? i dont have a hydro shop within driving distance
        I've never seen issues with Poly Main line tubbing I get locally. Contact any pond or landscaping companies. They should carry it.


          i think i may have this issue. all my leaves are yellowing from the bottom up and there is no nitrogen deficiency in regards to my reservoir mix. There are no other signs of deficiencies on my plants. Just leaves yellowing and crumbling from 1 week in. My hoses are blue and came with cap ebb gro bucket extensions. Does anyone have a idea how to distinguish between good & bad hoses?


            Is this phthalate poisoning???

            For the last year I haven't been able to shake various leaf symptoms and other plant health issues despite tinkering with every friggin' variable I could think of and then some. I had started to think it was some virus for lack of other ideas. The plant pictures in the "Warning new off gassing product!!!!" thread look more like mine than any I've seen so far.

            To anyone who knows, U.G.U and those who've had this, is this not it?:

            P.S. Almost forgot to add that they get these symptoms just under HID lights, while under florescents they will seem fine and show little or no symptoms, regardless of temperature. I was saying to a friend the other day it's as if my plants had become allergic to bright light??


              Fucked up shit, didn't see this thread before. Has anybody pics which are a good representation of this poisoning?
              1200W seed SOG
              1200W tent SCROG; FMS Superskunk, Easy Sativa, KC Brains KC33(fem.)
              Current setup: 1800W Gavita Triplestar, 12/12 from seed SOG, Nirvana AK48



                Wow, thanks for providing the info to the community. If the company wishes to behave like that, I don't think any of us have a problem taking our business elsewhere.
                "What does a fish know about the water in which is swims its entire life?"

                *Legal MMJ Patient in strict compliance.*


                  Just in case, remove plants from containers and quickly look for root aphids scurrying. You have to be quick cuz they'll retreat into the medium right away. Good luck. -granger
                  Fully compliant Medical Patient.


                    lol I think that plant is harvested or dead by now..

                    #hammerhead_genetics on IG
                    Hammers Perpetual showroom


                      i know this is an old thread, but i suspect i had or am having this problem in my new place. i don't think it is my tubing, it's the same i always use, i removed the pond liner i was using, but that has a stamp of pp50 or something on is, no no.3. have been using some shoe trays as clone trays recently, was wondering if they might be causing it. as i never had to deal with this before, it has to be something in the room. i just hope to good it isn't the linoleum floor that installed? how would i deal with that? carpet? check my testing thread if anyone has pertinent input on this subject for me.

                      peace out

                      "it is clear that the individual who persecutes a man, his brother, because he is not of his a monster" Voltaire

                      not every post you disagree with, has to be responded to!


                        Great post, info, and break downs. Thanks


                          Most of your plastics are doing just aren't seeing damage.

                          Use HDPE, LDPE, or something similarly classed. I void my garden hose before every water and avoid otherwise using any plastic that has any odor- which includes some sandwich bags that I am pretty sure shouldn't be on the market.

                          Originally posted by U.G.U View Post
                          So I have been experiencing a mysterious yellowing for about 10 months. Every thing that went into one of my 11 different rooms (some that had been going 5+ years) started to yellow and eventually die. My first instinct was my ph I checked my pens, they were not very far off but I calibrated and bought new probes anyways. That did nothing. Then we suspected the nutes, maybe we got a bad batch. I had bought 6 gallon jugs and filled all my 1 gal’s up off the same batch. Call the company run the batch numbers and they say they are 18 months old, So we went out bought new nutes and nothing changed. So after that I figured my favorite brand had fallen off and we decided to try another brand. We go buy $1000 worth of canna. And we thought possibly it could be something with our clones so we picked up a batch of clones from an LA club. Same thing new nutes new genetics same yellowing. So now I am scratching my head start making some calls visit a bunch of other rooms, and at least 20 in my immediate area have this same mystery problem. So I do some research find out we are all on the same water supply. I found 4 rooms on another water district doing bitching so I say BINGO, It must be the water. We go out and buy a 275 gallon tote and start buying water from this other district. A real pain in the ass I might add we had to do 2-3 trips a week to meet our demands. Same problem. We start doing testing 1st water test, 2nd tissues sample, I have a horticulturist come and look at things. He suggests an Iron def. We get our tests back everything looks good. We do a tissue sample off a room that is doing good compare our results and everything is fine. Except my plants still look like shit. So I emailed my test results to my original nute company they pass it around the office and let everyone take a look at it. I get a call a couple of days later from them and he asks me if I have ever considered off gassing. What is crazy is the night before I found a thread on the hydro huts and was showing my partner how Identical it looked. So now we go to our rooms and start looking around at what it could possibly be. Like I said some rooms had been going in the same location with nothing changed in about 5 years. There is only 1 new product that we had replaced the ½ tube that connects all the buckets. I started to call around and every room that was having the problem had replaced there tube with the new stuff. The 4 rooms that were doing good were using old hose and was just washing it out. So being lazy saved theses guys who would of thought. I have been talking to the company that made the offending tube for 4 months and they do not wish to resolve this problem even though I have proof that the toxic chemical is in the tube. We have done GC/MS testing, LC/MS, testing and FT IR testing that show conclusively that the chemical Diisobutyl phthalate is in the tube. This is the same chemical that caused the problems with the hydro huts. If you are having a mysterious yellowing and are using NGW tube replace it immediately and please respond to this thread. I am going to be working on a class action against these guys. I have some of the worlds top experts on the matter willing to testify and do any research needed to win this case. The idiots printed there names on the tube it has printed every foot, so it is easy to identify.

                          Here is a brief description of what the phthalate does to the plants.

                          The toxicity caused by a volatile constituent from certain samples of flexible polyvinyl chloride (PVC)
                          was due to dibutyl or diisobutyl phthalate (DBP or DIBP) plasticisers. It has caused serious financial
                          losses in the horticultural industry. The two phthalate esters have low volatilities, so any toxicity lasts
                          for many years. Radish (Raphanus sativus L. cv. Cherry Belle) seedlings, exposed to an air stream
                          containing 160-180 ng dm~3 of butyl phthalates developed chlorotic leaves within 3-4 d and died
                          within 12 d. Neither dioctyl nor diisodecyl phthalate (DOP nor DIDP) produced damage in the test
                          plants. Measurements of photosynthetic and respiratory gas exchange in intact shoots of affected
                          radishes showed that photosynthesis was severely inhibited whilst respiration was virtually
                          unaffected. Electron micrographs of sections from young leaves showed disruption of thylakoid
                          formation and granal stacking. In mature leaves, thylakoids and grana were well formed but
                          chloroplasts were swollen and the thylakoids were pushed towards the vacuolar side of the
                          chloroplast. Sensitivity to toxic phthalates varies between species; all members of the Crucifcrae tested
                          were susceptible, tomato less so, and lettuce and ryegrass were resistant. Toxicity of DIBP, from PVC
                          glazing strip, caused a reduction in crop value of £20000 per acre per year in commercially grown,
                          monocrop tomatoes.

                          The effects of phthalate esters on chlorophyll a2 fluorescence in radish plants (Raphanus sativus L. cv.
                          Cherry Belle) were examined Fluorescence yield was increased in those plants exposed to an aerial
                          concentration of 120 ng dm"3 dibutyl phthalate (DBP) at a rate of 3-0 dm3 min"1 for 13 d.
                          Comparison of fluorescence enhancement ratios and Fr^/F01 suggests that DBP inhibits photosynthesis
                          in radish plants at a site after QA. Both DBP and diisobutyl phthalate (DIBP) strongly
                          inhibited uncoupled (PS2 + PS1) electron transport rates in thylakoids isolated from spinach. At a
                          chlorophyll concentration of 10 /ig cm"3 the concentrations of DBP and DIBP exhibiting 50%
                          inhibition were 44 mmol m " 3 and 42 mmol m " 3 respectively. Basal electron transport rates were also
                          inhibited, with 87 mmol m"3 of DBP or DIBP producing 50% inhibition. Measurement of
                          photosystem 1 activity suggested that the main site of action of these phthalates was localized at a site
                          near the reducing side of photosystem 2.

                          ECA #10281

                          The analysis of the samples has been completed and the results are given below. The sample information is:
                          ______________________________ ____________________ ________________
                          Customer Identification: PVT Tube
                          Sample #: 10281a
                          Date Received: 7-12-10
                          Test Requested: Identification and Quantification of Phthalate(s)
                          USP <851> FTIR with quantitative extraction.

                          Sample Results
                          PVT Tube
                          15.95% diisobutylphthalate
                          FTIR spectrum matches well with diisobutylphthalate library spectra and reference standard.

                          FOR MORE INFO FOLLOW THIS THREAD HERE.



                            Is this in air lines or trash cans? Can a trash can being used as reservoir do this?


                              What's the outcome of this issue? Has anyone taken this to court?

                              I stopped doing DWC because I've got the blue tubing from sunlight supply for my level tubes.

                              Fortunately I only grow for myself so I can do coco in an eight gallon bucket without any problems. The buckets are from a home brewing company so they can't have toxic materials in their products.


                                Can we unsticky this already?? This is 8 years old and honestly probably irrelevant to almost anybody here and even wrong section if it ever was.
                                Last edited by Rabbi; 02-01-2018, 13:14.