I have a 35 gallon tank that I have to PH, it takes just a little more than a couple drops.
Just to be clear as there seems to be a bit of confusion. You do NOT want to add your PH solution (up or down) to your feed water. The straight shot of acid can react adversely with the nutes. This is why you want to ph before you add the food and give it time to dissipate. This is in the cases that you NEED to ph. If your water comes out at 8.0 and your nutes raise it 1.0, then you should ph your water down to 6.0 (5.
if you are shooting for around 7.0 (6.
before you add the nutes.
Why would you want to add acid to your feed water? Doesn't it make more sense to have the water ready to just add the nutes and then feed instead of adding acid to your feed water? This really isn't a difficult concept. Some mutha fuckers are always trying to ice-skate up hill.