You have 10 gallons of bioballs.. that's more than enough for that size tank.. I think my 300 gallon has maybe 4-5 gallons of bioballs and it's a lot more heavlily stocked than yours. Don't put the scrubbies in.. Why risk it? Over time, the biological media gets a coat of film on it. With a built in sump like yours, you need to periodically take the bio balls out and syphon/shopvac out all the film at the bottom ( you really need to do this with every sump, but with a built in sump, typically you have to remove all media).. I could see the scrubbies getting clogged with that film and just being a PITA.
The point is, you have so many bioballs, you don't need the scrubbies, so why add them and invite potential problems.
I am always confused why scrubbies are so popular on this board. Bioballs are not that expensive.
People use scrubbies instead of bioballs to save cash, but then they add $50 of pond matrix and pumps that are 3 times more powerful than needed.. Bioballs are easier to maintain and no worries about them breaking down over time (as some have said with scrubbies).
So I could see using scrubbies if the budget is really tight.. but the reality is that most people overspend in other areas that they could economize on.
The point is, you have so many bioballs, you don't need the scrubbies, so why add them and invite potential problems.
I am always confused why scrubbies are so popular on this board. Bioballs are not that expensive.
People use scrubbies instead of bioballs to save cash, but then they add $50 of pond matrix and pumps that are 3 times more powerful than needed.. Bioballs are easier to maintain and no worries about them breaking down over time (as some have said with scrubbies).
So I could see using scrubbies if the budget is really tight.. but the reality is that most people overspend in other areas that they could economize on.