Hmmm...good question! If no one has an answer for this, I will test it out and see what happens.
Please help!!!
- Thread starter schenko
- Start date
Essentially one of the gifts of crushed coral is that it dosolves faster at lower Ph and slows significantly as it gets higher. it usually tops out about 7.6. or so. So when you change water you get a slight drop in Ph. Then it qu recovers to about the same as before in my tanks it only takes it a few hours to get back to where it was before water change. Unless your water is vastly different than tank your fish won't notice at all. For example:
tank is at ph =7.6 Kh= 3.5 - 4 (that's about what it will be with atmospheric co2 levels). You do a 50% water change with tap water that is Kh 1 your tank will then have a Kh level of about 2.5 which means a Ph of 7.4 give or take a point. The tank will then recover to the ph of 7.6 and kh will raise to 3.5-4 again and remain steady at that point. These changes are really insignificant enough that the fish won't notice them at all. Even if you are using RO water with no Kh and 50% water changes you will not see a big change in the tank or get an complaints from your fish. Some of the chemistry guru's may shed some more light or correct me If I'm wrong.
Additionally it is the Kh and gh that will harm the fish not so much the actual ph. In my co2 injected tanks, water changes cause a big difference in Ph because the change water is low co2. the total dissolved solid levels are constant and the fish don't care about the ph within reason.
Dave
tank is at ph =7.6 Kh= 3.5 - 4 (that's about what it will be with atmospheric co2 levels). You do a 50% water change with tap water that is Kh 1 your tank will then have a Kh level of about 2.5 which means a Ph of 7.4 give or take a point. The tank will then recover to the ph of 7.6 and kh will raise to 3.5-4 again and remain steady at that point. These changes are really insignificant enough that the fish won't notice them at all. Even if you are using RO water with no Kh and 50% water changes you will not see a big change in the tank or get an complaints from your fish. Some of the chemistry guru's may shed some more light or correct me If I'm wrong.
Additionally it is the Kh and gh that will harm the fish not so much the actual ph. In my co2 injected tanks, water changes cause a big difference in Ph because the change water is low co2. the total dissolved solid levels are constant and the fish don't care about the ph within reason.
Dave
