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Showing results for tags 'filtration'.
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Hi guys,I'll start describing my system:500 lt IBC fish tank1 grow bed 100x120x25cm (300lt). Wet media probably 200 ltMedia expanded clay pebbles.Water runs 15 minutes every hour using a timer.I'm growing 2 broad beans, 1 lettuce 1 strawberry 1 pok choy.15 trouts weighting 80ish grams each.Current feeding 10gr daily (divided in 4 feeds) and I should be feeding 25gr per day.water temperature have been quite low, between 5 and 20 degreeI've been running this system for 8 months, they cycle was completed in the first month.Generally speaking I've seen nitrates the first month and never anymore.With this feeding rate my ammonia and nitrites levels are always quite high, around 1ppm.If I stop feeding ammonia and nitrites disappear within 2 days. Yesterday I cleaned the grow bed but it wasn't dirty or smelly at all.I know 15 fishes are too many for my grow beds and I'm planning to add one more but shouldn't my current media fully support my current fish weight and feeding rate? If that is so, why I'm seeing ammonia and nitrites at 1ppm (and even more if I feed more)Also, why i'm not seeing any Nitrates with those few plants?Thanks guys in advance and, very nice forum.
So, I just did a harvest, drained the main 750 U.S. Gallon tank and discovered that circulation in the tank seems to be lacking. I have spots where there are up to 1/4" of solids sitting on the bottom. Any ideas on solving this issue? I am thinking maybe adding a water circulation pump to keep the solids moving along the bottom. Suggestions...go!
Hi, I'm Bob, and new to the site as well as new to the world of aquaponics. I just designed, built, and started up my backyard AP system. I based it on 3 - 275 gallon IBC totes. I have 4 - 75 gallon grow beds filled with clay growing media and 2 - 200 gallon fish tanks (piped together as one). I'm afraid that in my excitement to get it all up and running, I jumped the gun in adding fish to my system. I had it running about a week and I couldn't stand it - I added fish. I did use some "seed" water (water from my friends established AP system) but I think that I have not got the proper bio components balanced and functioning properly yet. So the fish are stressing - gulping air. I have the water being oxygenated well with waterfall and air stones. It is my basic understanding that fish will also gulp air when the water chemistry is off, not just when water is not well oxygenated. I probably do not have enough plants going either to support the cycle. I do not have a specific filter (bio or mechanical) other than the grow beds and the strainer on the pump. I thought that these systems did not necessarily need special filtration - that the grow beds would provide that. Yesterday evening I did a partial water change (about 20%) and added some bottled pond bacteria product. This morning the fish are not gulping but they still seem sluggish and not that excited about eating. Any thoughts out there? Thanks, Bob Glad to be here!