 question on Canister filters
i have heard that canister filters were bad for a tank. Alos that all a good salt tank needs is a good skimmer and live rock to survive. welll i bought a canister filter at the pet store casue they said it would be needed in a fish tank. (50 gal slat tank here). 20 days later i check my nitrites and they are at 0 same with amonia, but my nitrate is off the charts. I do a water change and rinse and change bio media in filter. 3 days later amonia spikes up and my nitrate is still off the charts. Well i have gone back to a hang on filter for now and gotten rid of the canister. Only been one day and have not checked water levels yet, but had done another chage of 10 gals when i got rid of my canister . In all 25 gal change in 25 days. anyone ever hear of the canister filters causeing this? is it true witha good skimmer and live rock a filter is not needed in the tanks? My fish all seem fine and very active still. any advise would be helpful.
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50 Gal With Curshed coal substrate and live rock. 2 65W PC lights, Skimmer, waterfall filter
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