i have a 55 gallon saltwater tank tht has been running for about 3 months so far i have mostly all mushrooms, zooas, and green star polyps. i have 260 watt of pc lighting i know its not alot but its the only thing i can afford for 100 bucks and also MH would run my electricity bill up to much however i was wondering if i would be able to have any kind of sps coral, and also if i was to get a deresa clam would it be able to live? thanks alot