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I think you might be misunderstanding the kh/pH relationship?
Kh of 5 will make it very difficult to get to pH of 7.
And you said Hi-Tech? Are you testing pH of fully degassed water? What is your pH drop with co2 look like over the week? Also assuming you are testing pH of tap after it sits for atleast several hours? Some municipalities put chemicals in the water that artificially raise the pH. Not sure if Prime removes those?
Algae growth can be a result of many things but in a new tank it often times is too long of a light period. If you are over 6 hrs, I'd say drop it down for the short term.
My 10 gal tank runs at 1 kh, 6 Gh. Degassed pH runs around 7.1-7.2. Full co2, pH hovers around 6.0. Aquasoil substrate. Light is ramped with only 3 hrs full intensity, 6 hrs total. Tank has been running for over a year.
Shot glass is holding down the Monte Carlo, which has finally decided to pull up from substrate, lol!
Sent from my Pixel 3 XL using Tapatalk
Kh of 5 will make it very difficult to get to pH of 7.
And you said Hi-Tech? Are you testing pH of fully degassed water? What is your pH drop with co2 look like over the week? Also assuming you are testing pH of tap after it sits for atleast several hours? Some municipalities put chemicals in the water that artificially raise the pH. Not sure if Prime removes those?
Algae growth can be a result of many things but in a new tank it often times is too long of a light period. If you are over 6 hrs, I'd say drop it down for the short term.
My 10 gal tank runs at 1 kh, 6 Gh. Degassed pH runs around 7.1-7.2. Full co2, pH hovers around 6.0. Aquasoil substrate. Light is ramped with only 3 hrs full intensity, 6 hrs total. Tank has been running for over a year.
Shot glass is holding down the Monte Carlo, which has finally decided to pull up from substrate, lol!
Sent from my Pixel 3 XL using Tapatalk