09-07-2018, 10:32 AM
Join Date: Feb 2004
iTrader Positive Rating: 100%
| | Re: F's e(im)mersed tanks
The diatomite I use wasn't intentionally to adjust pH.
7+ years ago, I bought a 50 lb bag of diatomite gravel and a bag of diatomite rock to test as a substitute for hydroton.
I am not a scientist so I do not know the reasons why diatomite affect pH. I was trying to isolate the problem of rising pH within a day from 4 pH to 7. The diluted fertilizer in a plastic bucket stay at 4 pH indefinitely but as soon as I add to the tank pH go up rapidly to 7 within a day. I was trying to maintain a pH of 5 and having pH stable at 7 was counterproductive for black water experiment.
I suggest to do some testing before adding things into the tank, last thing you want is to have huge swing in water parameter from tap water to tank water and not know what is causing the swing.