Macroalgae tank

[Earl Karl]

So I started a new 29 gallon macroalgae tank. However, I only have two of those $100 reef LEDs that you get from Amazon. Will these lights be able to grow macroalgae, or would I have to invest in a 6500k light or grow light?

 

[Lawlboom]

If you're not doing corals, I'd go for the 6500k light. Less chance of the algae going sexual.

 

[Earl Karl]

Well the tank is sorta overstocked to keep high nutrients and I am dosing Seachem Flourish. Will it make a difference or would it still go sexual? These lights are strong too. At 40", PAR is at 300. If I turn the white only and while minimizing blue a little, will that help?