We need to know the numbers of his tests.... he needs to test for Nitrate, Phosphate and silicates and post the numbers so we can see where they are.
I would start be tossing the bio balls.. Not needed when you have LR
as a natural filtration. IMO
1-1.5 Lbs per gal
is plenty some people like more some less it all depends on your taste. I like having fish tanks not rock tanks so I run less. Having more IMO
will not hurt anything.
Have him test this fresh water and see what the reading are before he mixes the salt. And what type of filtered water are we talking about ro
, kold steril, tap water with house filter.....
12 hours is not too long for lighting IMO
. What type of lights are we talking? Cutting back on the lighting till the algea is gone should not hurt anything, I do not see any corals listed.