possible root rot, SM 90 or hygrozyme?

[yamaha_1fan]

I dont have a pic, I will try to get one later tonight.

E&F table with 200 SOG plants

Northern Lights Strain

200 gallon rez with GH nutes on the Lothar formula. Currently has Liquid KoolBloom additive.

Day 45ish of a 60ish day strain

1000 Watt lights


I have 3 tables and this problem seems to be limited to just one table. This table has 3 plants that are just real droopy, like they are overwatered. The leaves are also yellow. I dont believe they are overwatered as this strain has been running for months and I have pulled 6-7 harvests using the same schedule, nutes, etc. Nothing has changed.

I believe there may be an issue with old roots in the system and the system not being cleaned properly beyween harvests. Yeah I know. I usually take all the hydroton out and try to get all the roots out, and put it back in. But I have not bleached or sterilized the tables or media for a while. Yeah I know, my current empty table is getting a full scrub down and so will every table from now on.

I dumped some H2O2 in there, probably 4 tablespoons per gallon. I plan on dumping it tomorrow morning. I have heard the h2o2 is not that as it kills everything and will allow the problem to come back twice as fast.

So should I use SM-90 which is suppesed to deal with root rot or use the hygrozyme to deal with the old roots?

 

[HeadyPete]

Get some pix up for more help......

 

[LokiBC]

Do you have a separate res. for each table? It sounds like you have a pythium problem, which I've found usually happens when the nutrient reservoir is too warm/under oxygenated. The warmer the water, the less oxygen it can carry. I've used SM90 in a soilless mix before with good success. In hydroponics, the only thing that's worked for me is cooling the res., increasing aeration, and Ridomil.

Good luck.

 

[yamaha_1fan]

Hope these pics help

Each table has 2 100 gallon reses. I havent had an issue till now. The temps may be getting a tad warm, I will check the temps. I really think it has something to do with the left over roots.

I dumped in some SM90 today. I only have 20 days to go so I am hoping the SM90 will fix the problem.

I also picked up some air pumps and am going to get all my stones together and get them cleaned up and back in use. The old air pumnps died and I never bothered to put new ones in.

 

[HeadyPete]

I'd look more into the temps as well...if not the rez than perhaps you have fed too much for the warmer weather. Have you done a run in the summer using these methods? Plants need less food the warmer it gets. Perhaps you fried your leaves with overfeeding...