Need help with canister filter for 75 gallon.

DrgRcr said:
Peronally, I would go with a canister and an HOB. This combo seems to provide plenty of bio and mechanical filtration. As far as canisters go, there are plenty of good options. Eheim, Fluval, Rena, as said before are all good options. I have a PennPlax Cascade 1200 on my 72g, and although some don't like it, IMO it does a good job. And if you look around online, you can get it fairly cheap. As far as HOB's, Penguins, Emperors, or AquaClears's will do the job well. I have a Penguin on my 72 with customized media(not the cartridges) and an AC on my 125 and both do a very good job. Good luck.
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You said canister and HOB. What is HOB?
 
angyles said:
I also run both a canister and an HOB and I'm very happy with that. The only way you can over-filter is if the filters you have crate so much water movement, your fish cna't handle it. Many canisters have flow control on them though, so it can be reduced as needed. What I run is a Cascade 1000 and a Aquaclear 500 on my 150G. Some would say I'm underfiltered, but honestly it's never been a problem. I do plan to eventually add another Cascade 1000 onto the other end. I went with the cascade because it was a reasonable price, one of the best LFS in my area uses it for their entire shop and has decided to carry and warrenty it exclusively, and it's a very simple design. I've never tried any of the other, much more expensive, brands and I doubt I will.
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I'm researching filtration for a 75 gallon as well. I noticed that you have two canister filters (Cascade 1000 & Aquaclear 500). Would it make sense for me to just go a step above or so on the Cascade to the Cascade 1200 or 1500 instead of getting two completely separate filters? It would be more cost effective that way. Is there a reason why two are generally used instead of a single larger one?
 
the aquaclear 500 is a HOB. It's been renumbered though. I think it's now the 100 and my 200 is now a 20. or something like that :-)

Part of the reason I like to have multiple filters on a large tank is to make sure all the areas are covered. You don't want to have dead areas (no water movement) if you can help it. With both heaters and filters, I usually go with 2 of each and distribute the load between them.
 
2 reasons seem to dominate. 1 is for redundancy, if one filters malfunctions for some reason, you have a backup. The second is that some filter types perform certain duties better than others. From what I've read in many places, the canisters seem to excel at bio-filtration, while the HOB's do well at mechanical filtration. So you are getting the best of both worlds, so to speak. No to say that either doesn't do both types of filtering, just one better than the other. HTH.
 
often over looked in tank is 'dead spots'

with 2 filters you help to reduce dead spots in the tank. power heads also help with flow to reduce dead zones in the tank.
your decor. plants, driftwood etc will create these dead spots..

my 75 has a sump with 1200 gph pump I reduce dead spots with power head but an seriously considering adding another filter (canister)

this tank has Discus and flow is not a real issue as driftwood and plants seem to create havens for them
 
If you want a good mechanical filtration in a canister instead of a HOB, the Marineland Magnum 350 is the best. I run a Mag 350 and a C-360 on my 125 gallon goldfish tank. The combo does a really good job with my little poopers. I have goldfish and they like the bubbles so I have a bubble wand to increase the circulation.
 
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