That's the kind they ordered for me.. Said it was all they could get (doubt it though) and they sold em for 31.99/each.. I had store credit and since i had to wait so long they gave me 1 for free.. There's a local guy by me i just now found who sells em.. Hamiltons from 25 and coralife from the same price.. depends on watts and what color.. if you check out e b ay.. go to search for stores and type in coral reef.. I think i just need a new end for my lights (part that plugs into the ballast) The light came on and then it started smoking like theres a short inside so im going to order 1 and see if that works.. I found another ballast i had laying around and it works so right now 1 will be fine in there, Its actually pretty bright.. Although its more of a purple IMO than a true actinic