I have a Sea Hare (cannot find ID. Assuming FL or Caribbean. Light Grey with small black spots), a lettuce nudibranch, 2 FL Purple Urchins. I am in the process of stocking more macroalgae in the tank. They all have been fine with Green Hair Algae, but I know the Sea Hare loves Halymenia (he ate a baseball sized colony in about a week). I want to provide a well rounded environment for these guys, but I cannot break the bank. I was offered the Sea Hare as an answer to a Hair Algae outbreak from an old rock leaching nutrients, and a sizable upgrade on lighting. I see many who utilize the Sea Hare for a couple of weeks to clean up and return it to the LFS or someone else who needs a clean. I'm not looking to do that... Tank has been running for about 2 years, and I have taken it very slow. I am away some and have an "autopilot" system. There are 8 blue leg hermits, about 30 various snails, 2 urchins, 1 Sea Hare and 1 Lettuce nudibranchs, and until recently, a large red Dragon's Breath. I have a patch of gsp also (growing and spreading). I have always wanted to provide the necessary environment for these guys without needing to supplement feed a multitude of different things. I dose 2 part Calcium/Alkalinity additive and Magnesium, and feed weekly with a phytoplankton for the gsp and pods. My water parameters are spot on with enough Nitrate and Phosphate to sustain macroalgae. Long story short... I'm following the macroalgae plan that I have always wanted, but I need to feed the beast (the Sea Hare). It loved the Dragon's Breathe, but he can't have steak and lobster every night. Are there other macro species that would sustain it. I have C. prolifera and Red Spicifera arriving this week. Any advise would be greatly appreciated. I know that the ID of the Sea Hare is very important to form an opinion. I just thought the Halymenia may be a clue...