Yeah MH's are best for clams...I would not have got one if I didn't have access to them in the future when it will need them. Luckily right now all it feeds on is phyto and the nano is running at least 18watts/gallon. (Brians 100g under MH's runs 15watts/gallon...my lighting is better than his... :twisted: ...I've insulted the man's lighting...I might need a place to stay for awhile (JK) :-D