Splotchy Discoloration

[Sirus]

Checking on the ladies tonight and I found this splotchy discoloration on pretty much all of them. I noticed it the day after feeding, which was yesterday, although not this pronounced. Any input into what is causing this? I am going back to distilled instead of the tap, idc how good they say the water is..

Blue Cheese

Lemon Skunk

Blue Venom

A little background: this is the set up

1. DR100L
2. 6" A/C dual lamp reflector w/6" Vortex: Veg: AgroSun Gold MH 3000K 400W and Hortilux Blue MH 6500K 400W Flower: Hortilux Super HPS 2100K 400W x 2
3. Lumatek digi ballasts
4. 2 SunMaster T5 2' 4 bulb 6500K for seedlings
5. 4" Vortex w/Phresh Filter
6. C.A.P Greenhouse controller w/fuzzy logic
7. Window unit air conditioner (8000 btu), directly mounted in wall of 8'x10'x6' room
8. Dehumidifer with direct drainage for constant use if needed
9. 2 Air King 6" clip on, and 2 4" personal fans

Genetics-Feminized

1. Barney's Farm - Red Diesel
2. Barney's Farm - Blue Cheese
3. DNA Genetics - Sharksbreath
4. DNA Genetics - Lemon Skunk
5. G13 - Blue Venom

Soil

1. FFOF 12 gal
2. FFLW 8 gal
3. EC 6 gal
4. Perlite (small) 6 gal
5. Dolomite Lime 2 tbs per gal of mix
6. FF full line of liquid and powder ferts

Today is day 29 of veg, running 24/0 temps have been mid 70's with rh 45-55% at all times..

 

[ibjamming]

You left out the most important info... What about your water? Water pH? PPM? Stuff like that. Looks like a deficiency...probably magnesium, it's the most common.

 

[laughingmoon]

According to this chart, it could be Mn defi. http://www.icmag.com/ic/showthread.php?t=66575&highlight=leaf+tip+yellowing

but yea, pH would be nice to know first...

 

[Mr. Greengenes]

Hard to guess what state the nutrients are in without seeing the size of the pot and it's relationship to the size of the plant. Could just need repotting.

 

[Sirus]

Thanks for the input everyone . pH of tap is 7.8, ppm 140. I adjust all watering/feeding to a pH of 6.8. I bought a soil pH test kit and my samples will be ready for testing tommrow. The cheap will have to do till I can afford a soil meter. The ladies were watered yesterday and I noticed that new growth is not showing the splotchy-ness. I also re-calibrated my liquid meter, which was off significantly, which may also explain this. I believe it is getting close to repotting up to the 5 gal, it is 32 days into veg and they have been in these 2 gal pots since about 14 days into veg. I will not make the same mistake of putting root-bound ladies into flower!

 

[Mr. Greengenes]

Yeah, probably too late to repot. I would just water and feed heavily to finish out. Maybe a tray to catch runoff and let it sit in it an hour or two with each watering.

 

[Sirus]

Gonna transplant into the 5 gal tommrow prolly, checking them out they don't appear to be tottally root bound. There are still some holes that dont have roots growing outta the bottom. The discoloration has stopped, new growth looking okay!