just got my 75 gallon running with tons of gorgeous plants. I'll have a journal up for you guys soon, i promise!
i do not have a bubble counter or drop checker as off yet, but instead of letting my plants melt i have decided to inject CO2 and add ferts (EI method, following closely) until those items come in the mail. I am injecting into a diffuser/reactor mounted on the output of my eheim canister filter. i am definitely seeing a fine spray of very small bubbles coming out of my outlet in the tank, but nothing that seemed too absurd. all bubbles less than .5 mm. I assumed this was normal considering my subpar (IMHO) diffusion method. ever since i started injecting, the tank has become VERY cloudy. granted this is a new tank and it hasn't truly cycled yet, it could just be bacterial bloom.
I also have two guppies in the tank to help the tank cycle. One of the guppies died after the second day of CO2, and the other one, quite honestly, is looking pretty crap.
i checked my ph, and to my amazment this was the outcome: tap ph = 7.8, tank ph = <6.0!!!! this is what led me to believe my co2 levels were sky high!! i have since dialed down the needle valve.
good news: plants are already pearling after 4 days in the tank, and growing new off-shoots!
so... is CO2 creating my milky water? is my ph swing normal, or more intune with CO2 overdose? lol. my co2 tank went from 1100 psi to 950 psi in 3 days... i think i am starting to answer my own question here. any input?