Filtration using small tank?

[WateryWorld]

Another newbie question, really pressed for time lately so it's hard to do my own research on this.

Got used 125 gal tank from someone and the filter on it is crap. I could use some advice on whether or not I can/should be using a 20 or 30 gal tank as my filtration system.

If I want to do that I think I can buy an overflow box and install it all myself? I don't want to drill the tank or anything complex. What other accessories/equipment would I need to set it up? Can the 20 or 30 gal just sit on the floor (which has basic carpeting)?

I don't like the noise of the hanging filtration systems, and they seem to end up costing more over time anyway due to the filters they need? And not be as good of filtration. I'm thinking of going with a couple canister filters if the tank thing isn't easy. Due to the cost I may start with only one hanging & one canister.

 

[RodInCALIFORNIA]

check craigslist or ebay and pick up a complete wet/dry system for under 100.00 thats how i did instead of a DIY which i am not good at and would most likely have cost me way more in the end. i got a very nice wet/dry on ebay w/ bio balls and the return pump and over flow box all i had to do was spend less then 5.00 for tubing for the return at home depot total i was out for the system was 76.47

 

[ghengis]

A sump (which is what you're talking about) is (possibly) the best way to filter a larger tank, such as yours. Skip over to Monster Fish Keepers, those guys have some great DIYs, and many about various overflow sytems, for you to learn from. Also check out Reef Central. They really are the Big Boys of the hobby (IMO) and know how to spend up on the Big Toys. Just keep in mind anything you see being done, can be acheived on a small budget, with a bit of imagination and willingness to adapt.

Failing that, Googling "DIY overflow" will net you a thousand sites to read thru.

Good luck with that, and don't forget to post pics!!