Yes -- if you are doing daily siphoning of poop and not overfeeding -- otherwise in a week a FH is going to produce a LOT of waste and I personally wouldn't want my FH sitting in that (even in a 115 gallon) for a week. Get your self something like this battery powered tank cleaner (you don't have to use the electrical hook up as shown, batteries are safer) -- it only takes about 5 min. for a quick cleaning and it'll make your (and FH's) life much easier. I have one for each of my tanks, not only FH.
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