Originally Posted by rwolfy
Thanks for the advice and the links. I think I will pick up one Fluval C4 to replace one of the Penguin 330s and see how it goes from there. As far as achieving crystal clear water, does the C4 come with a polishing pad or do you put one in yourself? I was also going to put Purigen in the C4. Do you think if I was eventually just running two C4s on the tank I could achieve decent water clarity or would you still recommend the cannister with one C4 to achieve this end?
The standard factory poly/fiber pad is all one piece but it provides course pad AND a polishing pad.
Here is a link to a picture of a new and used one (note the caption):
Aquarium Advice - Aquarium Forum Community - Paul1792's Album: Paul1792's 29 gallon - Picture
The factory pad does a fine job polishing the water. However ...... I found I really get uber duber crystal clear polished water using cut to fit acurel debris reducing pad + 100 micron AquaticLife non-woven polishing pad. Their combined thickness is exactly the same as the factory poly/fiber pad [the polishing pad is only 1/12 of an inch (per mfg .. looks more like 1/8 to me] ..... but anyway ....... it works great.
And yes, if I a 55 gallon, I'd run C4's for sure. Although I think one canister and one C4 would produce the same result. [The only reason I don't have a 55 is because my tap is HORRIBLE and I hate hauling water and buying gallon jugs of spring & R/O water at WalMart and having to use the old fashioned "bucket method" to do water changes]
There is lots of room in the chemical chamber of the C4. I have two bags of purigen + a small biobag of Matrix in the chemical chamber of mine.
BTW: When you say "I'll pick up one" ........ I hope you can avoid full retail price. They're currently about $55 at Amazon and Drs. Foster & Smith.