My battle with dinoflagellates

[Frogger]

Not sure I would want to dose H2O2 directly to my tank. I have tried it before to control algae and it did not work unless you use it in an Oxydator.

You do not have a lot of rocks in your tank. I would just take them out and scrub them. Add some CUC to keep it in check. You might have to do it a few times.

If you really must use peroxide I would spot treat out of the tank. Only problem is peroxide does a great job on the hair algae but it also toasts coraline algae and amphipods/copepods as well.

Be careful how quickly you bring you nutrient levels back down or you could cause a cyano outbreak or worse back to the dinoflagellates. You haven't eliminated them only created a more balanced system that out competes them.

Chemical cures can also create an unbalanced system which leads to further problems.