Water Changes and Parameters - The Planted Tank Forum
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post #1 of 2 (permalink) Old 08-19-2019, 03:47 PM Thread Starter
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Water Changes and Parameters

Good Morning

I have a question or four...

I usually do once a week water changes. I cycled a new tank and began to do water changes with it, I was having PH Issues in another tank and decided to test all of my tanks. So I do my normal changes on the other tanks while working on my other tanks. I tested the tank that I was referring to and it's ammonia is 0 nitrites 0 Nitrates somewhere around 20.

The tank has 6 least kilifish, one platy fry, and 2 guppies in it, 2 baby mystery snails, and some MTS. It is a 20 long, heavily planted with a sponge filter for a 75 gallon on it. So I said, I was going to test in a week and see what's up instead of doing a water change. I do the test Ammonia 0, Nitrites 0, Nitrates 5.

Everything seems fine, and the plants seem to be absorbing the nitrates as following tests show the nitrates hanging out between 5-20 ppm.

The question is when to do a water change because this tank is so lightly stocked. My other tanks I still do weekly and they are not as heavily planted as this one?
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post #2 of 2 (permalink) Old 08-19-2019, 04:10 PM
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Do weekly water changes anyway. Evaporation (and topping off with tap water) will cause your TDS and other parameters to slowly creep up, regardless of your stocking density.
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