[2011rex87]

The pictures are not oriented properly. They are sideways and need to be rotated around. I have to turn my head to see them correctly. The quality of the pictures is okay but the background is a little dark. It looks like there is ALOT of algae growth on the pots, and the top soil, and the rockwool. Then again it could just be the way the picture looks.

I think you are now on the right track. If your PPM going in was 300 and coming out was 950, there is a serious build up of salts in the pot. Continue to correct this build up and keep the water events on point and I bet your plants will look better in a week maybe less.

[Bush Dr]

Originally Posted by colo720

some cannazym, h202

Better make your mind up, that's an enzyme and a chemical designed to kill enzymes.. bin the h2o2

[colo720]

Here's the update, after a week of limited hand waterings and watering with diluted nute solution, around 300ppm.

1. no more automated waterings. I waited till the media (coco or rockwool) was just about dried out and plant beginning to flag before watering
2. some plants in veg are excelling and either haven't got the problem yet or skipped over it - and are doing fine. some still have the new growth stunted (picture #4) - the effected plants are growing a bit taller, and new branches are forming, but its all stunted.
3. could the problem be pythium or aerobic bacteria? I'm about to water in the flower room (pictures 1-3) with Actinovate to try to knock out any fungus or bad bacteria. I'm also brewing compost beneficial tea to use in 48 hours.

I'm still at a loss for what is going on. Anybody who has seen this before and defeated it, or has any detailed help to give, I appreciate it!

[2011rex87]

Honestly your plants do not look too bad at all from those new pictures. I see a little clawing and some slight droop but the color is there and the leaves are good size etc. If you have the ability to pull the rootball out of the pot and take a picture - that could help determine if your issue is in the media/rootball. It's usually a PITA to pull the rootball out of a fabric smart pot so don't worry about it if it's going to mess things up.

If you truly suspect an issue in your rootball - there are thousands of products sold to clean with. h202 alone can help deliver oxygen to your roots while cleaning away some unwanted debris and dead organic material. You would want to start low with a 1% then 3% then maybe 5% solution but do testing to ensure you do not burn up your plants. Too strong of a h202 solution will cause more harm than good.

There are tons of enzymatic cleaners for your roots as well. Specially if you suspect a fungal infection like root rot.

[colo720]

Ok, thank you.

The problem is the new growth -- it's not healthy, it does not reach up the light and then extend out the way healthy plants do. The new growth on these plants is discolored, small, and lethargic. The nodes beneath the top, the new branches don't shoot out as in a healthy plant - their new growth is stunted in the same way the top stem growth is stunted.

I'll pull the rootball on one of these - I don't mind as I believe they will be duds anyway (they're mid way through week 2 of flower) - and take some pics. Ok, I'm posting the pics. The rootball appears to be ok - white firm roots. (all these plants are different strains, from seed. i start from seed using rockwool, that's why the 3" cube is there). the roots extending out from the rockwool look good. the first picture I broke apart the rockwool for a fully dissected view.

Just as a quick recap.
1. feb 5th flushed with 300ppm and 3% h202
2. waited for media to dry out
3. as coco & rockwool dried out, hand watered 2-4 days later with the same rinse.
4. last night watered with 500ppm (normal at this stage for my setup would be 900ppm) and Actinovate.

Any help is greatly appreciated!

[2011rex87]

Ok.. Hm.. Good looking roots there.. They are small enough to make a full recovery while in VEG before you switch to flower cycle. I'll keep an eye on this thread and see if I can be of any further assistance.

[colo720]

no change brothers -- any ideas?

[Bird of Hermes]

Originally Posted by colo720

no change brothers -- any ideas?

How do the leaves feel? Are they thin and feel kinda dry or are they soft and a lil fat? They dont look too bad maybe a little overwatered at some point. If the roots are white its probably good though keep a eye on your reservoir ph and temp too cold nute solutions and air temps can cause drooping.

Let em grow for a while and just keep a eye out if it got cold it couldve gone into shock a bit and slow down temporarily.

[colo720]

the leaves feel a bit dry and crunchy. some of the bigger ones I just tried bending and the center vein snapped, and in some the leaf snapped in two. is the humidity too dry? i'm in normal conditions for my setup: here are the readings fresh off both sentinel climate controllers:

FLOWER area:
temp: 61 F min - 82 max
rH: 26min - 50 max
res 64F

VEG area:
temp: 69 F min - 89 max
rH: 24min - 57 max
res 69F

*these represent the past 5-6 days since last I cleared the memory.

i'm trying to be patient and let em grow, and they just keep looking like duds. I can accept this round in flower may be throw away, but the goal is to understand why so the problem plants in veg (with the same stunting) can be helped, and so the future doesn't look so bleak!

[TanzanianMagic]

Magnesium deficieny in late veg/early flowering. Which includes the preflowers showing up, as I found out feeding magnesium free reverse osmosis water. Magnesium deficiency already shows up when the preflowers appear, which should be around the 8th node or later.

I think the cause is lockout, and the plant just needs magnesium most at this stage of it's development. The temperature could be low, and you might need to get those pots off the ground, if that's the case. Cold would lock out magnesium.

Coco is not a complicated medium. I would say flush the coco long and slow with a solution of 0.2 EC of high P/K flower solution and a 6.0 pH.

Also, you might want to head for the pet store and get a bag of hemp bedding, and use that as a thin 1/2 inch mulch layer. It regulates the humidity in the medium, it excludes light so you don't have algae growth, and it also breaks down to feed the plants. And because reptiles absorb toxins through their skins, it can't have any pesticides and the likes in it.