Question: Filter and GPH

[Tim Robin]

We are trying to learn all we can and make an educated decision on filters. We plan on setting up a 20-30 gal aquatic environment for 2-3 juvenile Neurergus strauchii and a second identical or nearly identical set up for 2-3 juvenile Neurergus kaiseri. Our question is what is too much as far as gph? We found several filter that range from 80 to 250 gph flow.
Do you all recommend a minimal of 3 stage filtration? Are filters like anything else, you get what you pay for?

Thanks for your help.:happy:

 

[Tigra]

Hello Tim. I run a few aquaria with external filters. They do +/- a 6 times change of the volume each hour. I'm happy with this.

 

[Azhael]

In such big volumes of water and with so few animals per tank, filtration shouldn´t be a concern at all. I would only care about providing a current which they need, but not about the actual filtration capacity, as it´s almost impossible that with the apropriate maintenance, the nitrites and ammonia will ever reach dangerous levels.