Lighting suggestions for 20G Sump/Refugium

[guitaris70]

I'm looking for a light for my 20 gallon sump/refugium for a tank I'm going to be setting up, it needs to be able to grow macroalgae and preferably something that clamps on to the sump that is good and reliable, thanks! I was looking at the eshopps light but it has terrible reviews on Amazon

 

[pugcrush]

I'm looking for a light for my 20 gallon sump/refugium for a tank I'm going to be setting up, it needs to be able to grow macroalgae and preferably something that clamps on to the sump that is good and reliable, thanks! I was looking at the eshopps light but it has terrible reviews on Amazon

You can get a clamp on at the local hardware store. Throw a 6500k LED bulb and call it a day. Cheapest option you can go also.

 

[rushbattle]

I reallly like PAR38 LED bulbs, they have better efficiency because they are focused to where you want the light. I have and really like this bulb, but I cannot speak to its long term use as I got it recently:
http://a.co/2gdEl2B

I also have a pure blue/red PAR38 bulb that I've used for a while and it works quite well growing algae:
http://a.co/9qrz89U

I use a hanging cord for mine underneath my stand:
http://a.co/g1dwBHp

But this guy is pretty popular and works well, not expensive:
http://a.co/5LrdPbK

 

[mikee002]

I was looking at this one... A few reviews mentioned like that they use it as a refugium light. https://www.amazon.com/dp/B013K2G5OY/ref=cm_sw_r_cp_apa_PFwyyb28Z9CW7

 

[rushbattle]

I was looking at this one... A few reviews mentioned like that they use it as a refugium light. https://www.amazon.com/dp/B013K2G5OY/ref=cm_sw_r_cp_apa_PFwyyb28Z9CW7

That is very low power and has too much blue light for growing algae efficiently. But it would probably grow something!