Aquaponics: How to move the manure and waste from the aquarium?

fish waste aquaponics systems: issue of hello goodbye : How excrement and waste from the aquarium to move I have some decorative and some gravel in my aquarium, I purchased it and I'm not extremely good at these issues. I can see a lot of waste, hair and feces on the floor in between the gravel and gravel, I have a filter, but it will not empty the waste. I heard that if I modify the water the fish could die. Is there a way I can hurt with the waste gravel fish respond far better: response

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