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Hi, I'm currently in Uganda working with an NGO that wants to add some vegetable production to their current earthen tilapia ponds. Originally I was thinking aquaponics, but I recently heard about iAVs and was impressed with its simplicity. We don't have electricity here, so I'm trying to keep power requirements minimal and use solar. I've read that iAV can work with ponds but haven't found much detailed information on designing a pond iAV system. What are the differences between iAV with a pond instead of a tank? The NGO currently has a 100,800 L earthen pond with no mechanical aeration and a low stocking density of tilapia. Since the pond is so big, I don't want to recirculate the water as much as in a fish tank. How much water (what flow rate) should be pumped with each cycle? Also, if I have a lower stocking density than with tanks, should I still use the recommended 1:2 fish water to sand bio-filter volume or should it be less? That would be a lot of sand. Thanks! Here's a picture of the pond.
I think I may have goofed in a test kit purchase. I recently purchased and API Pond Kit, first after I got home I realized it had no Nitrate solution, only pH/Ammonia/Nitrite and Phosphate, then I picked up API Nitrate solution from the Aquatics store. What I would like to know is there a difference in the API Pond Kit and the API Freshwater Kit. I noticed some of the scales are different colors for the same tests. I currently am running the fish side in an aquarium/tank. Anyone else make this mistake and is it really a mistake? Should just go back and get the Freshwater Master Kit? Thanks John