I had been thinking about one of these for a while a macro algae reactor but the prices for these units seem crazy for what they are so went about making one.
It consists of a second-hand TMC500 pellet reactor (Thanks Shane) and a £10 waterproof 5m strip of 12v led
's 300 in total and daylight spec 6000-6500k
I got them and wrapped them around the reactor followed by a several rolls of insulation tape and there we have it DIY macro algae reactor I'll see how it goes
And here it is fitted to the tank