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The water fall is acting as a skimmer for the top pond and all the dust,
dirt, debris that lands on the pond, plus any floating plant material all go over the water fall to the small pond at the bottom. The pump will recirculate some of this stuff, since it will be dispersed through the water column. The bottom pond will fill with muck, mulm, fairly quickly and needs to be cleaned regularly. When I started out, I had a similar setup to yours, and then added a 1500 gallon liner pond to the mix, and then the amount of mulm built up very quickly in the bottom pond. You really need a solids handling pump that you can put on the bottom of the small lower pond and then have the water circulated through some form of filter that can be easily cleaned, or you will be cleaning the bottom pond very often, or you will be building pockets of hydrogen sulfide gas that will kill fish, if you want to have fish in the lower pond. If you don't mind not having fish in the lower pond, then it can be a settling tank, setting the pump intake near the surface, and as material builds up, turn off the pump, use a shop vac or similar to clean the pond and then refill the bottom pond and restart the system. -- RichToyBox http://www.geocities.com/richtoybox/index.html "jammer" wrote in message ... Here is what has changed: I added about a 150 gallon raised preform that runs into the bottom pond. I built a little waterfall to run into the new top pond and dropped a 250gph pump into the bottom pond. This is when i notice large dirt particles being circulated around. ('ll be cleaning it soon but still...) I know i need a filter but what is the easiest/cheapest way to go for my small set-up? A rubber maid tub with some sort of material...... I can do a web search but what can i use that is fish safe? I itch just thinking about insulation, anything easier to handle/clean? And why are my fish ok in the top pond but not the bottom? |
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