Apr 18, 2001, 6:00 PM
Post #1 of 38
Earlier on I have posted a photo on DIY sand filter. This PP Bead Filter is an improvement over the sand filter.
DIY PP Bead Filter
PP stands for Polypropelene, I call it PP Bead because the plastic bead used is Polypropelene bead. It has a relative density of 0.92 (or so) so it floats.
Water would be drawn from the pond and pumped to the bottom of bead filter. It filters through the beads and come out at the top of drum. The five valves are there to enable filtration, backwashing and rinsing.
The advantage it has over the sand filter is obvious. The beads are light and it floats, when backwashed the fish waste could easily be dislodged and drain off from the bottom of the filter.
If your existing pond is having green water problem try using this filter as your prefilter. Pump the water through PP bead filter first and then discharge it to your existing bio filter. It should cure the problem.
If it is intended as stand alone filter, I have no idea what size of pond it could support at this moment. This is new, I am trying it out on a 1000 gallon pond. I will be able to give feedback in a couple of months.
One word of caution, please allow the beads to be soaked for 4 weeks and clean off regularly any residual chemical it may have left behind during the bead manufacturing process.