Whats wrong with my Clams?

[MarkoD]

Originally Posted by sphelps

So you wait 6 months, then do a water change, then all of a sudden clams start acting up. Stability sounds like an issue unless there's something else you've forgotten about?

no. i wait 6 months, clams start acting up. i do a 10 gallon water change. no change except at night (which was happening before and after the minor waterchange)