So just today I bought a 30 gallon tank with a heater and an under gravel filter, for just 65 dollars! :-D I intend on making it a sorority tank. I desperatley want a planted tank, but do not have the money to buy another filter. I have read that under gravel filters and planted tanks do not really go well together, but i was wondering if there is any way it can be done. For example what if I laid a layer of gravel down then put gravel tidy on top and then put the soil and sand on top of that. Would this work? If not please tell me if there is any way it can be done. Thanks!!