Quote:
Originally Posted by
spanko http:///forum/thread/385189/bioballs#post_3377341
The Oceanic skimmer is an okay skimmer but it an old wooden airstone configuration and the airstone needs to be changed about once per month.
On the bioballs they are very efficient in what they are designed to do. That is have a lot of water and air move over them with a lot of surface area for nitrifying bacteria to populate. The purpose of this bacteria is to convert ammonia to nitrite and nitrite to nitrate. Unfortunately that is where it ends so if you have no biological method of removing the nitrates from your system they tend to rise. People call biomedia a nitrate factory and they are correct because that is inherantly their design. Removal of nitrates then becomes a job for water changes and you may not be able to keep up with it that way. The other thing about bioballs is that the accumulate detritus on them and must be cleaned often. Usually 1/3 of them at a time removed and swished around in the water you remove for water changes. No scrubbing here just some heavy swishing to get the gunk off but leave the bacteria colony. The at the next water change another 1/3 of them and so on. A lot of maintenance and there are better methods now to remove protein materials before they break down into ammonia in the first place so you don't get the nitrates.
I would not replace bioballs with live rock in the back chambers as the same problem of maintenance would need to be done to get rid of the accumulated detritus that the rock would collect.
If you choose to remove the bioballs do it slowly over the course of a couple of monthe, a little each week. This will give the bacteria colony a chance to replenish itself from the amount of bacteria you remove with the bioballs. If you do it all at once you chance removing so much bacteria that the reamaining may not be able to convert ammonia fast enough and you will get an ammonia spike.
Thanks for the advice!
Here's what I'd like to do,...IF possible: Somehow,...some way,.... get a refugium/sump set up underneath the tank. Have you, our anyone else heard of such a setup? If so,...guidance would be appreciated!