the plants in my 180 arent doing so great, and im wanting to lift them up a bit towards the light and also give them decent substrate to grow in. my idea is get hold of some 2-3inch deep plastic trays, maybe 6 x 6 inch for roots to grow outward and plant the plants into decent soil rather than the gravel. this way i can easily remove the plants for gravel vacs, any maintainence etc, and the plants have decent nutrients from the roots. what do you think, would it work?