Is it OK to do syphon a 5 gallon everyday? This tank doesn't have a filter and it's heavily planted. Also no fish are in the tank and I have no intention of putting a fish in. A month ago I got this tank and I didn't have a small enough syphon to use so I used jugs. When I found one today I quickly did a syphoning of the aquasoil substrate and there was a lot of gunk. Can I do one everyday? If not how many times a week?