Thought i would post a bit of a look at how we managed to clean out the grow bed that was loaded with fish solids.. i think this is part of the reason there. Shorter cycles suggested the grow-beds had obstructions and were not dumping most of the water. cleaning the system. digging deep showed the system was pretty well full of fish crap. plants were still growing but the system needed a good clean out. the good bit about cleaning hydroton is that it separates from the fish crap quite easily.. Grow bed depth in a media based aquaponics system is a subject not without a little controversy. the majority of media-based aquaponic growers will say that you should have about 12″ (300 mm) of media, with the top 1 – 2″ being left dry to reduce algae and fungal growth..
Hi, the other thing about cleaning grow beds is that, if your system is fitted with stand-alone filtration, the whole business of cleaning grow beds becomes that much easier.....because fewer solids are making their way into the grow bed and any sediment that does (over a much longer period of time) collect in a grow bed, will be much easier to dislodge with a water lance.. Step 2 - add grow beds in a ratio of 1:1. start with a grow bed ratio of 1:1, which is 800 square feet of grow beds for an 800-gallon fish tank. as you add more fish, increase the grow bed square footage to as high as 4:1. an 800-gallon fish tank can support 3,200 square feet of grow beds. step 3 - increase the ratios of gravel and beneficial.
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