biological filtration

[NgaNasty]

so as long and my mechanical is fine and my water params are good (which they are) then my 1 chamber of bio that i have now is fine? i just need to work on my mechanical a bit more

 

[creepyoldguy]

Too much biological filtration or too much filtration in general depends on what you find acceptable. The only real harm you can do to your stock is by creating too much flow, but the greater danger is to your wallet.
You don't need nearly as much filtration as the prevailing attitude on MFK might lead you to believe. If you have 0 ammonia and 0 nitrite in your water, you have enough biological filtration. Any additional filtration on top of what will keep your water parameters in check is excess. I am very much in favour of a comfortable amount of excess and redundancy of equipment, 'just in case'.

The two filters you propose using on the 55G would be a very comfortable excess when filled with just about any media you like. If you have an issue with one, the other should be able to handle filtration by itself for however long it takes to sort the problem out.

Couldn't have said it better myself!

 

[cichlid2006]

so as long and my mechanical is fine and my water params are good (which they are) then my 1 chamber of bio that i have now is fine? i just need to work on my mechanical a bit more

Yes, that should be fine.
If you wanted/needed to, and this is totally up to you, you could increase your mechanical by completely removing bio specific media and replacing it with a fine sponge and micron pad for final polishing. It will still act as bio media once it has matured like any bio media needs to and will likely be enough bio-media for your needs.
If you do go that route remember to remove the bio media gradually over a couple of months whilst replacing what you take out with a layer of sponge. That way you will avoid destroying your filter.