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Thanks for the suggestions.

I have a 29 gallon cycled tank. It has 2 ac20's and I do a PWC every 1 to 2 weeks of 10 gal. Water stays pretty consistent at 7.6 pH, 76 deg F, 0 Amm, 0 Nitrite, and 10-20 Nitrate. It's currently...

I saw you had already ordered them, I hope they work well for you. I wanted to post my solution for anyone else looking as well. Or, if you decide to extend the prefilters to the bottom of your...

Here's a pic. The sponge is hiding behind the fake plants.

http://i464.photobucket.com/albums/rr2/ayeauxcpf/spongeprefilter.jpg

Sponge filter

I ordered one of these, cut it in half and using some black tubing from home depot made an extension and prefilter for my 2 AC20's. It is coarse just like the AC sponges.

I put...

I feel confident it is the impeller because when I tried the petroleum jelly, I put it on the impeller magnet, and the rattling went away for about 30 min only to return. I've cleaned it all off and...

An update.

So, I went to ship it back for an exchange and found out it would cost about $9. I only paid $18.50 for it to begin with. I might have been able to get the shipping down some if I...

What brand of sponge, and how did you attach to the intake please?

I have looked at the ATI sponges, but the tubing is about 1 inch diameter, too big to attach directly to my AC's. I have seen...

Don't remember where I read it, but the idea was to give the impeller some buffer between it and the housing, taking up the space so no rattling. It wasn't bubbles, and have tried restarting it many...

That will be the next time I setup a tank. Right now I just can't justify the expense. The AC20 was the only new filter I've gotten, and less than $20 at that. My other AC runs nearly silent, and...

I recently re-setup my 29 gallon tank and ordered a new AC 20 to go next to my older AC MINI (same model as 20 only older). Once they were setup, I can tell that the new filter makes a rattling...

I don't see anything wrong with the sponge attached to your HOB. As long as water flows through it, it filters. You would be losing out on the air bubbles is all.

That is exactly the way I...

Thanks for the quick responses.

The tubing was just clear vinyl, looks like airline tubing only bigger. I saw the beverage tubing, but it had braiding in it and didn't want that look in the tank....

Hello, and a quick introduction. I've re-setup a 29 gal that I took down about 7 years ago. I am currently going through a fishless cycle and am still working out my filter setup. I currently have...