[dOHd]

Well since I have some time, let me weigh in on this subject.

First, the major producers of bead filtration do not push their filter as the end all to do all, it is the shops that sell them, or builders that install them. They will tell you that with the dirty water that comes into the bottom drain, your filter will constantly stay clogged.

The simple remedy for this is a settlement chamber, preferably round, without any matting, deep, and allowing the incoming water to spin.

Here at the shop, we have all our tanks with bottom drains. The crap (and there is a lot of crap as we feed an average of 2 tons of feed a year to the fish for sale) is gravity fed to a 1500 gallon settlement chamber. Water is pulled from the middle of the settlement chamber (within 6 inches of the surface) and run through two large multistory trickle style filters. The water is then picked up on the side and is drawn to the pumps, then to the bead filters. I have both, Aquadyne and Aquabead. I have a leaning to the Aquabead, but the dyne is a great filter as well.

Anyway, the bead filter catches the fines just well, and the water in the display tanks is always crystal clear without the use of any UV lights. The water parameters are always great with nitrates always below 30.

The key is the settlement chamber. We clean it out once a week, and it averages 8-14 inches of sludge at the bottom. I also believe that one fo the reasons my bead filter works so well is that the trickle filters(running with 8000 gallons an hour between the two) keeps the water going into the filters well oxygenated, more so than most other applications.

Now, as far as streambeds and water falls go, I have a DIY display pond that I built for those on a budget. It consists of a 1800 gallon pond, 4 feet deep, 4 water falls, several streambeds, and a DIY settlement chamber that cleans the water before it gets to the external pump. The settlement chambers do have 1 section of the green mattala matting in each one to form a barrier between where the water runs in, and the pump picks it up.

In this pond, with only this for filtration, resides several large fish, most in the 24-28 inch range, and 9 smaller fish to grow out. They have grown from 6 inches in may to well over a foot long now in this setting.

I open two knife valves once a week to drain the settlement chambers, and that is it. Once a month, I do pull out the mattala matting and give it a rinse.

What is different aboutt this system is that it is a retro fit on a concrete pond without tearing the pond appart to install it. And everything except the knife valves and the mattala matting was either purchased at lowes or Home depot. Except the 55 gallon drums.

The long and short of this post is the removal of all solids before it ever gets to the pump. The minute you send anything solid through the pump, it becomes a liquid, and much harder to remove and deal with.

As for dealing with the debris ladden streambed issue, if you pre-clean the water going into the streambed, there is very little that will accumulate. And if you mortar the stones into place, there is very little room for any debris to stay in the streambed. Yeah it takes a bit more work to mortar the rocks into place, but over the next few years, you will see the benifit long term.

As for the difference in price, there are differences in the plumbing of a bead filter. They are not the same as a sand filter for your pool. The housing, yes, the internal plumbing, no. Swimming pool filters are also mass produced, not so for bead filters.

As for the proper backwashing of the bead filter, the air blower does a great job of breaking up any clogging going on, if not you are not backwashing enough (I had one guy only do it once every 6 months, no wonder it clogged) And has been stated, aquabead is much more end user friendly, and Gary is only a phone call away, cant say that about most of the other builders.


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