07-07-2008, 12:57 AM
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Planning to buy
I finally convinced myself to buy one of the denitrators, but I have a few questions:
I have a 120 gallon tank and it is a little overstocked with piranhas. I feed them twice a week, and my nitrates are still always high. I do water changes twice a week, but my nitrate levels are still always high because of the overstock. Should I buy the X-Large unit though it is rated for 180-400 gallons? Or should I still buy the Large unit since it is rated for 90-180 gallons?
The substrate of my tank is play sand from Home Depot that I cleaned. Does the pump have a pre-filter to avoid any sand getting into the pump and denitrator?
I hope to get answers soon, so I can place an order :D