I have been doing some research on building a plywood aquarium for a few months now and am going to take the plunge on a 700 gallon tank. I will have it set up to do automatic water changes but how do you clean the gravel or do i even have to? the tank will be 4ft deep so most normal siphon hoses will not work. I was thinking about plumbing pipe underneath the gravel with lots of holes and turning it on maybe once a week to blow all the debrit free floating and be sucked into the filter. what do you think?
