SavioEngineering SF01 Savio Springflo Bio Biological Filter Media, Green

I used this to replace bio balls in my waterfall spillway and pressurized filter. So far so good.Update-11/13/2021: Wow!I turned off my pump to clear some algae off my waterfall. When I turned it back on, the water looked brownish. I opened the water spillway (without turning off the pump) and started pulling the media out to clean it. I really should have turned off the pump. This media stopped so much muck from reentering the pond. It was seriously thick. Bio balls and a filter pad got no where near this. I heartily endorse this filter media. I will however remember to turn off the pump.

I used to have lava rock in my biofilter box. It was SO heavy and made taking it out and rinsing it really hard and even harder getting it back in where it belonged. With SpringFlo you just hold it over the box and let it unwind. You don't have to use it all if you don't need it. You will need something to weight it down though, or a bag or something to put it in. When we first started using it, it was stringing out of the waterfall. Once weighted down it stays put and colonies of bacteria started forming on it really quickly. I won't need to buy any filter media for a long, long time.

SpringFlo filter ribbon,This is a superior product by design. I have had a waterfall and pond at my home for over 20 years. My waterfall originally included the springflo ribbon. Over those years I have experimented with different material in my filter bags inside the waterfall. I can say that the springFlo is by far is a superior product. It keeps the water very clean and provides a safe environment for my fish.

Doing a major clean on the pond and already had some of this in my Savio Waterfall Filter unit (great, BTW - don't hesitate to buy one) from some years ago, but thought it might need replacement. Of course, you won't find anything written on the contrary by Savio that you can just use the old, but it takes a while for the bacteria to regroup on the new material, and I'm experiencing that now. It will be up to snuff in a couple months, but really, I should have used what I had before. They haven't changed material or design since my original purchase.For the first time users, this is great material, because it provides a huge amount of surface area to collect bacteria. I wouldn't use anything else.

Great stuff. I have used it for years.