i have adrainage layer like you said john after i re read it haha, but i have a tap for my drainage layer which when it gets full i just empty it (got some pictures) and john you helped me out alot and since i have done that and shown other australians there doing the same now haha.

getting another tank also to keep white lipped tree frogs/giasnt tree frog (dont know what they are called where you guys are) and thats also having a drainage layer with a tap. so should be exciting and good and there for wouldnt have to clean it out nearly every week.