Rugged but working

[Chris H]

Have currently put my cannister on and is working great am currently getting around 1600L an hour font ration from the two on a 200L tank is that sufficient?

[Godly3vil]

Deffinitely mate, that means that every hour you are filtering your water around 8 times which is fantastic.

[smidey]

yeah your now ready to throw in heaps of africans!

[David R]

A; do you know you're getting 1600lph turn over or just going by what it says on the box? I certainly wouldn't rely on the manufacturers ratings (although 8x theoretical turn over gives you a fairly good margin for manufacturers obfuscation).

B; wheter or not its enough depends entirely on how big your bioload is and what your water change schedule is like.

[Chris H]

One filter says 900l an hour and the other says 1000l an hour I do weekly 20 to 30% water change

[smidey]

One filter says 900l an hour and the other says 1000l an hour I do weekly 20 to 30% water change

in my experience with the a similar sized tank and amount of filtration it will be sweet with a large number of fish, say 40 africans ranging in size. When you add fish try to avoid adding a large number like 12 at one time as the filter will struggle to catch up, i guess you could if needed but i would reduce feeding and do two or three WC's in the next few weeks after adding just to make sure the nitrates etc don't get out of hand. just something to keep in mind.

[Chris H]

I'm currently adding 2 fish per week

[David R]

Sounds plenty for a 200L tank, although remember manufacturers usually measure flow rates without media and under ideal contitions [then round it up to the hearest hundred]. I justg read an article comparing an Eheim 2080 with a Fluval FX5, the Eheim produced around 71% of its claimed flow rate (which is pretty good by canister standards) and the FX5 managed 57% of claimed flow once loaded with media. Even at 50% flow (which is probably closer to the truth for an average canister with media once it has clogged a bit) you have a little under five times turn over, which is good for a moderately stocked tank. There are other factors too (like the amount of media each canister holds), but I'd say you should be fine, just reduce the feeding a bit if you add a heap of fish at once and keep an eye on the water conditions.

*edit* here is the link to the filter review, an interesting read even if you're not in the market for either model, shows just how much more there is to filtration than LPH; www.monsterfishkeepers.com/forums/showt ... 3-compared