Made from our Pro-Level Reticulated Foam, specifically suited for colonizing nitrifying bacteria at the highest levels.
Actual size varies with each filter.
Large - range from about 50-100 cu/in.
Small - ranges from about 30-60 cu/in.
The Large can be either 15ppi Blue or 30ppi Black. We send what is ready. The Small are 50ppi Charcoal.
Comes with lift tube. You must supply the airline.
We ship when you order, so it's your responsibility to avoid weekend and holiday delays. You should try to make sure the carrier you choose will get them from our location (14760) to yours, within 2-3 days.
When you receive these, make sure to add any water in the bag to the tank. Do not worry about it being dirty. It is full of nitrifying bacteria and you do not want to throw this out or siphon it out with a water change until the tank is fully established.
Setting Up Filter:Run an airline to the lift tube. Insert the airline into the hole in the top side of the lift tube and thread it to within 1/2" of the bottom. Then insert the bottom of the lift tube into the hole in the sponge. You can put the filter into any part of the tank. If it floats, gently squeeze the air out of it.
Some people cut these to fit inside of power filters. That will work if the fit is tight, but if water can travel around the filter instead of through it, then that is what the water will do and it will not be as effective in establishing your aquarium.
We are not fans of "fish-less" cycling.It seems every time a customer is having trouble cycling their tanks with our filters, it's a "fish-less" cycle. It's possible some additive in the ammonia they're adding, is interfering with their test kit readings or is simply doing something to the nitrifying bacteria. Either way, if you add one of our active filters, your tank is ready for fish. Forget about adding ammonia first.