Switching over to LED

[AquaticFinatic]

Start of with them at around 40% then slowly increase it after that. Simple

[Madreefer]

Speaking from epxperience from impatience and bad results from cranking them up to quick do what AquaticFinatic said.

[e46er]

I think the radions have a 2'x2' coverage so if the tank is standard 220 (72x24dx30t) you should be ok with 3 units
Plus the 2 cross braces would basically block 1/2 of 2 units if you were to purchase 4
But I don't own radions so this is all hear say

[cneil]

Well i ended up with 6 units. The price was too good to turn down. All set at 40% for 12 hours a day. I guess i will se how that goes.