hey i have 2- 250 H.O.T. magnums with tinted canister housing so you can see through it but yet its tinted so algae doesnt grow inside it...both have new parts inside they work great with diaton powder to get rid of parasites in the water, or you could just run foam filters or micron filters of various strenths inside....$35 + shipping a piece...unless you wanna run down to hughesville to pick them up, ill throw in the diatom powder for ya if you want free of charge..