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new roots are beginning to grow, i believe most will recover. Thanks for all your help.

have not had PH problems in 48 hours, i believe problems were a result of over nutes. I am currently running 330ppm with minor improvements showing. I hope the damage is reversable? Should I run water constanly (with airstone) or is it better too water for 15 min with 1 hour downtime?

PH from the tap is 6.6, ppm as I mentioned is hovering between 100-115ppm, I will let sit and advise if ppm rises or not. Healthy Harvest is the Brand Name I use, it is local to my area. Here is an exact breakdown of dosage per gallon. Grow - 10ml Bloom - 10ml Micro - 5ml B1 - 5ml Cal-Plus...

How would I mix the nutes into the tables without coming into direct contact with roots? Even at 260ppm the PH continued to rise to over 6.8 in 12 hours, everything I've tried has not been able to keep ph at a reasonable level

no light getting to the roots, something tells me that its a problem with my water source, Im on a well, is there any way to test the water for deficiences? My ppm read 100 for water with no nutes. I only run a 15 gallon tank for two tables perhaps I should run 40 gallon rez? Is an airstone...

would you suggest rockwool or hydroton as a medium to fill the space under the table?

I had been watering 24/7 up until a few days ago. problems still persisted

I tested and had over 600 ppm. I started a new res with significantly lower ppm @ 260, hopfully they will begin to show improvement.

Here are the pics... and some more info ..water cycle is ON-30 min OFF-90 min I have also just moved to new location? Just purchased ppm meter, what reading should I get?

Interesting, I will post pics tomorrow evening. I appreciate your help, hopefully pics will shed more light. I will also pic up a ppm meter

change res twice weekly. will post pics but cannot untill tomorrow. Even If I were not feeding enough it shouldnt kill the plants right?

I dont have a ppm gauge, it has never been an issue previously. I feed less than recommended dose as far as nutes are concerned

they do not grow, as growth is stunted, but they do not dry out

Could I use small rockwool cubes to fill the space?

Table tops are covered, same strain I believe. Sounds like alot of hydroton to use. but if it works that's all that matters

I have two tables feeding 32 plants (16 per), everything is fine until plant roots begin to show from rockwool. At which point the problems begin. all plants show the following signs of stress. 1) red stems 2) bottom leaves drying up (crispy) 3) top leaves are drooping and slightly curled...