| http://www.w3.org/ns/prov#value | - it is not surprising at all that you have had pretty high nitrogen readings in the tank if you have not vacuumed the gravel yet The one I showed a picture of would work just fine, and there is no such thing as taking out too much water as long as Lucky can still swim around without problems You may even have to take out a little bit more than usual to clean the gravel properly.he is the problem with
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