Tropical Fish Forum
Tropical Fish Keeping Help and Advice => Fish Health => Topic started by: Peterhill26 on November 20, 2016, 05:56:35 PM
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Is it necessary to have a KH in your Aquarium ? My tap water only got 2.
Mt tank shows zero but all my Discus and community fish are great no Problems and all eating fine.
I have been changing my water 10% every day but my LFS is telling me only change it twice a week and take out 25% each time.
Is 25% Twice a week better tan 10& every day?.
Could you came back to me with your Answers above
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Low KH is not a problem as long as you are aware that it is low and that you need to keep an eye on your pH. The natural tendency of a tank is to become acidic and with low KH - that is, hardly any carbonate - the acid uses it up quickly making a pH crash possible.
As for the frequency and amount of water changes, it is really up to you. But 7 x 10% changes a week doesn't add up to the same as 1 x 70% water change because each of those 10% changes removes some of the water you added yesterday. And some of the water you added the day before and the day before that. But 10% a day will replace more KH that 25% twice a week.
Mind you, 20% every day would top up the KH better still ;D