Just make sure the phosphate remover you get is ferric iron based and not aluminum based. Find a good source of Reverse osmosis water for making up water for your tank, as your water source is likely the same as your local fish stores, or at least pulling from the same water table. Phosphates and nitrates are often high in LFS because a lot of them do not use RO filters, just tap water and they pretty much need to overstock their tanks to be able to carry enough stock in a limited show room space which typically leads to high nitrates. Tap water can contain a lot of phosphate, nitrogen and silicate all of which will feed algae. Charcoal is often the source of high phosphates levels in tanks that are using phosphate free RO water for Top off and make up water. Red is a regular coralline algae color. Not as common seen as pink, but still readily available. Red coralline is typically from a shallower water source than pink coralline. Pink is the same species of coralline but from deeper water and therefore with less red spectrum light exposure.
