I have a 50 gallon taken with 12 gallons of space used to house filtration: heater and protein skimmer. I have recently added live rock to system 60#. I was told if i want to add coral I will need to get rid of bioballs. What do i do with all the space I have allotted to bio balls. The system is set so the drip plate rest on the bioballs if i remove them I have more noise and reduced ease of access to drip plate and biological filter that rest on top of it. I have been told fill space with live rock but the cost would be really high to fill that space to the current level it is at with the bioballs. Please help!!!