now since i am planning on getting a pacman frog monday, ive decided to use my old firebellys tank for the pacman frog and and giving my firebellys the 20 gallon! now ive picked up the tank already and a floating island but i still need a bunch of plants and some more rocks for it but im just wondering how deep should the water be? im hoping it doesnt need to be to deep since ive fallen in love with putting crickets in a glass bowl that they cant get out of but if the bowl isnt dug into gravel deep enough the frogs jump into the glass since its see through. since i need to do this i figure i need to have a small ramp of gravel and then ill place the bowl in there and itll be good, but water depth is an issue now because if its to deep i need a bigger ramp so the bowl isnt in the water and i dont have to much gravel. im sure ill do fine though if the water doesnt need to be over 2 inches deep. another question is what should i do for a filter? all the filters ive seen need to be plugged in but theres no room for a cord to be in the tank when the lid is on! ive seen these vacuume filter kind of things that u use to clean gravel or something but what to they do? is that an option to use to clean the water? one more question that ive been wondering about but never asked, to firebelly toads need calcium with d3 and a multivitamin? ive always used just calcium with no d3. that about sums it all up and i will have pictures of the setup tommorow after i get everything ready!