Why not just have a timer turn the draining pump on once a week for a few minutes? HD sells a reliable digital timer that i've been using for a couple years. I dont now the brand or model though and it was around $20. You can program it to turn on and off many times a day, once a day, once a week, on certain days at certain times, its really flexible. Why not do a once a day waterchange? If i had an automatic thingy setup, thats what i'd do.
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10 gallon tank
15 neon tetra, 5 red phantom tetra, 11 ottocinclus, 9 cardinia japonica
AH supply lighting, Seachem and greg watson ferts, eco-complete
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