Algae removal will help reduce the root cause. As you remove the algae, you remove the fuel source as well but an easier way would be to eliminate the cause itself. Once accomplished the diatoms will die without addition fuss from you. An RO
unit is definately a plus but one drawback is most water sources will still contain silicates and phosphates that only a DI
resin can remove/lower enough to not fuel these algaes in the first place. Adding the additional stage to your RO
set up would be the best solution. What's the TDS
of your water before and after?