Coursair
Aquarium Advice Addict
brandon1420 said:Thanks I'm wanting to put miraclegrow in my 55gal does it have to be sand on top
Yes, you have to cap dirt. Sand does the best job. Gravel may let it escape and you'd get green water.
brandon1420 said:Thanks I'm wanting to put miraclegrow in my 55gal does it have to be sand on top