Join Date: Oct 2017
Location: Montreal, Canada
I have my tank that is currently running CO2 on a PH controller (24/24h) to keep the PH steady at around 6.9. Standard PH is 7.6 (without CO2 injection) and dKH is really low at 1.68 based on the NUTRAFIN test (3 drops). dKH from tap is 4 drops so very low also.
Here are the questions:
1- Should I run the PH controller while lights are out or should I just close it with a timer?
2- I want to put my dKH higher around 4-5. I will use Carbonate from Aquavitro for this. When I do water change (20-30% per week even though readins are sill below 10ppm Nitrates), as the tap water has very low dKH, the dKH will lower right? if so, bringing it back up with each water change will not harm the fishes? I read that larger variations in KH are not good for fishes.
Current fauna includes 2 Angelfishes, 1 Golden Gourami, 11 Cardinals, 9 Cory Leucolemas, 8 Cory Orange Venezuelan, 1 Bolivian Ram, a few Amanos and Nerites/Spixi snails. Everything in a 56g Tank.
Thanks all for your input.
56g Freshwater Community Tank
12g Fluval Edge Shrimp and Betta Tank