Thanks i have a few questions, im getting alot of algae on my sand but it disapears when i turn the lights are off and appear with in a few hours after the lights are on is there anything that i can do to control it, i have like 30 snalis 9 turbos, 5 nassaurus (or however they are called) and the rest some black snails, i have like 20 hermits that i think they are reproducin because i saw 2 really little ones, and 2 emerals but im planning on getting another emeral i saw one with big claws i think he might be a male, i had a goby but it desapeared, my other question is that i have like 50 or more lbs of lr but i want to add some more rock and i was wondering if i can use some rock that i used b4 on my fw tanks about 4 years ago after i wash them really good and boil them??????????? and how long can i keep my ro/di salt water mix if it had a pump and a heater b4 it goes bad????????