Our aquarium customers have experimented with a variety of filter materials and micron ratings. The consensus is that 100 micron polypropylene felt provides the best solution. On the same note, the vessel of choice for this application is our Model 14 vessel that accepts size 4 filter bags.
Here are the links for each individual component we have mentioned above. The vessel is Model 14 and its components, with PONG100P4P filter bags.
If you have any questions or concerns, please use Contact Us form or just give us a call.
Why are there bubbles in my aquarium when I replace filter bags?
You are using polypropylene singed felt (PONG) bags that contain small traces of foreign chemical from the production process, this chemical is NOT harmful to the aquarium life. These bubbles can be reduced by pre-washing your filter bag in clear fresh water (three rinses should do it).
When should I replace my filter bags?
This depends on the size of your aquarium and the amount of sea life you have present. Below are some before and after pictures of what one of our customers does. You can be the best judge of your own aquarium.
Why does everyone recommend a different micron rating bag?
This is the most popular question out there! Here is why.... the bag PONG100P4P is a NOMINAL rated bag, which means that roughly 80% of the time it will capture particles that are 100 microns in size. In reality it's a 150 micron bag 98% of the time. If you substitued your PONG100P4P for an ABSOLUTE rated bag such as NMO100P4P, then it will capture 99% of the time particles which are 100 microns in size. So what does that mean for you? ...in reality nothing, because each aquarium is different and therefore needs different filtration, but on average you should be somewhere in the range of 50-200 microns. Here is a graph comparing Nominal and Absolute rated bags: