Hmm, that is not so easy to answer. I would generally agree but I would also generally caution that I would see algaes as a useful weapon for combating nutrients, but not a total solution. For example with chaeto you can have plenty of nitrate and phosphate and not enough iron. Then you have to ask is dosing iron going to do a lot to drop nitrate and phosphate and would it not be cheaper to dose vodka or do a water change or run GFO. For the most part I see algaes as a help, more than anything they help raise pH and give pods a home to reproduce in and while more may be better, I would say the smaller one would slow or hold the line on nutrient levels if everything went right, the bigger one could possibly drop it, but then you could get to where the nutrients are depleted and it crashes and likely you would have to dose an iron supplement. On my 265 I plan to add the big one as soon as it is available but I am more interested in pH and pods, I generally have been able to hold the line on nutrients with vodka and modest water changes and occasional GFO use.
