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I use ebb n flow on 4x4 trays with hydroton. flood every 3 hours 8x/day. the timer has 8 settings so its easy. Also frozen water bottles in the...
If your ph is rising your ppms are too low. add more nutes and your ph will stabilize. get it to 5.8 and let it rise to no more than 6.3 in 24...
heat stress for sure.I was gonna say not enough water too, but I dont know your full setup
they have analog ones for around 75-150, dunno how well they work but the digi ones do work for sure
250 ish is what they cost. Autopilot PPM-5 Co2 Monitor & Controller with Remote Sensor New | eBay , HTG Supply - Einstein Digital CO2 Controller...
Rockwool works the same way. Ive used it many times before and i switched to this way and liked it more. The RW also has a 2" thick sheet to lay...
I have 3 4x4 trays with 6" net pots and clay pellets all around. fill the tray with clay (after you wash it). like this [IMG]
I run 3 4x4 trays with 25 gal rez for each. 6-9 plants in 6" net pots. set them in the tray and the add about 3-4 inches of clay pellets. works...
carbon filters get rid of all smell
hydro is 5.7-6.3 https://www.420magazine.com/gallery/data/500/Nutrient_Chart2.gif
old growth wont get better. check all the new growth. it looks fine to me
looks like a decent root system. show the size of the plant. I am about to suggest upping the ppms to stable the ph but I need to make sure the...
use RO water. nutes will lower ph thats normal. get the ph to 5.7-6.3 after nutes are added. water temp needs to never go above 72. Frozen water...
I use hydroton clay pellets in 6"net pots. I just rinse them to get the dust off that clogs my pumps. never had an issue and I like them better...
I think the ppms are still low but I may be wrong. the res temp looks like it was mostly the prob ( but I do think upping the ppms a little bit...
it sounds like your ph swings too much to save. we need pics to determine more
not using enough nutes. unless your res temps are above 72 degrees. above 72 bacteria will grow and raise ph. if res temps are ok, then its prob...
test the runoff and see if its different from the original ph
ammonium will come from mold. is your humidity high? lots of air movement? we need more details/pics
too much nutes maybe. clean out res and use some h202 or add more air to the res