Keep in mind that the "Algae" is possibly only the symptom and may not be the actual root (
pun intended) problem. This isn't always the case as some algae are super efficient and will thrive in a fairly low nutrient system but usually algae is the symptom and not the cause.
I'd continue the dipping but also address the tank as a whole with:
- a) As mentioned above boost your Clean Up Crew greatly
- b) evaluate type of foods being used
- c) evaluate amount and frequency of feeding
- d) evaluate fish load
- e) evaluate water change amount & frequency
- f) evaluate over-all tank bio-filtration and manual filtration methods
Algae is best attacked from several points all at the same time. I've often found that my "Dips" work best immediately following some type manual removal (
scrubbing, picking, cutting, pulling LOL). I just dipped some new frags over the weekend and I scrubbed them with a metal brush (
looks like a tooth brush but it's metal bristles) immediately before a 5 minute dip in 50/50 solution (
and this was SPS ). That night both SPS have great polyp extension and last night looked better than ever. I build a "Rack" to elevate as much of the SPS out of the solution as possible but some always gets ON the coral itself. To date I've had no ill effects of this process.