I find AK47 stronger and more resinous than the skunk special. But maybe AK is too strong, can't smoke it except before sleeping. Skunk Special is a good compromise between yield ( awesome ) and strength ( B+, AK would be A+ ). Do you use a special horticole 250 HPS light ? far better results with it compared too a normal bulb. How is the grape fruit compared to AK? Thanks for the info about RO water, my TDS of tap water is EC 0.25 without nothing added in it. PH is 7. Is it hard water ?
Fhydro
fhydro Reviewed by fhydro on . PH stabilization in bubblers system Yes, it's very hard to stab the PH in bubblers system or in any system where water is aerated by air stones. I notice that i start a rez with PH 6 and the day after it's 7 so i've got to lower it, and under some particular conditions, the PH is 4!!! Now i've got the exponation from an aquarium seller. When there is few CO2 in the air, there is more oxygen, the PH goes up. When there is a lot of CO2 in the air, less oxygen, the PH goes down. When i saw py PH to 4, i had added CO2 the day before Rating: 5