ph going up to fast

[statelight]

Hey guys i have a little problem my ph keeps rising up i cant stabilize it in matter of
min i have a 2 gallon kit whit the small hose on the pots to feed an a air stone in it i m in my second week of growing plant look ok we can say i use sensi grow a and b and im using tap water and cristal ph to stabilize it ......thanks for the helper

 

[zem]

there must be some strong ph buffers in your tap water, wat the hell i cristal ph? are you saying that PH is rising within minutes after adding ph-? you may need a RO filter

 

[statelight]

what if i use distille water would it help

 

[zem]

yes sure would, with a 2gal res it makes sense to use distilled water

 

[statelight]

And one other thing what ph down up product should i use

 

[warfey]

are you using any hydroton rocks?If so,they should first be soaked overnight in ph'd water at about 4.0. It will bring the ph of rocks down into 5's and you can stabilize that resevoir.

 

[zem]

And one other thing what ph down up product should i use

i use phosphoric acid myself, some use sulfuric acid... i dont use ph up, when ph is too low i just add tap water