Filtration and Turnover ratio

[ricoishere]

I'm curious about the turnover ration other members have for their tanks. I have for one of my 47G, the Eheim Pro III, rated at max T/O rate of 450GPH. I'm replacing it with a 90G, using the same filter. That would give this tank a T/O of (hopefully filter pumps correctly) of 5 times per hour. I know recommendation is 6 times per hour. Planted tanks don't require as much, though. I'm curious how other members filter their tanks.

[ddavila06]

i have two fluval 405s with my 125. ea. is rated for aquariums up to 100 gallon.

[ricoishere]

i have two fluval 405s with my 125. ea. is rated for aquariums up to 100 gallon.

Damian, Are you happy with their performance? I am considereing going back to using redundant filtration, and adding a sponge filter, but don't feel like rinsing them out weekly!

[ddavila06]

very happy, noice was the main reason i changed to canisters. these things also add a lot of water flow which is good for my rainbows and is easy to maintain. i change the media (i slack some) every couple months, i only rinse the sponges that come inside, i only rinse the ceramic rings since they are ment to breed bacteria in them. but completely change the carbon. i tried placing a sponge in the intake and it clogs too often so fry beware!

[ricoishere]

Cool, now how often is your water turning over?

[ddavila06]

i have no idea, the website says 340 gallon per hour http://www.drsfostersmith.com/product/p ... 5758000000

so together im getting like 700 gallon of water moved through?

[ricoishere]

have you tried measuring the rate after running the filter for a month, with the media? I did that, and it seemend mine ran at about 75% of its rate, which I think is OK. I'll stil need another filter though.

[ingg]

And Eheim's push the highest % of water vs. published volumes of about any of the filters.

At a guess, Damian is probably actually pushing about 400 gph.

Yes, need more flow at the least - koralias make for nice powerheads for additional flow.