I was just reading around and the people with 29 gal biocubes were using two or the ones using a single always had to suppliment with stunners or something to get the spread. Personally, with the biocubes, I like them with the hood on, so I wouldn't want to have it with no hood and a pendant hanging way above it to get the spread. You really should look at noobtosalt (Jessie's) before buying, the rapidled kit is sweet. Or as you said in my thread, check out the reefbreeders units lol