I have two, but no idea if they are a,b or c. They grow great in my 75 gallon with 260 watts PC. I really have to keep a eye on the Ca levels though, they run on the low side.
Tried it, even boiled it for a second or two to make it more like seaweed. He didn't like it, but the Purpleback dug it. Use dark green lettuce, try broccoli too.
Just having mine for a day I can tell you this much already, It does seem to run on the hot side and the fans don't seem to move much air, but since it's on legs the heat transfer to the water is pretty low.
Mine came with 3 cords and they're labeled.
Sounds like you bought the same crew package I did about 8 weeks ago. The Hermit crab numbers keep shrinking because whenever a Emerald can grab one there's nothing left but legs after a few minutes.
Hi Y'all, by the way....first post.