To replace your current hood open up the unit approximately 4 inches and pop off the hood from the back hinges. This is very easy to do it should take no more than 1 min. to replace her whole hood on your nano cube.

With the LED lighting that is offered with this top you will not need to use a chiller where is if you had HQI lighting previously you probably had to use a chiller due to the amount of high heat those units put out compared to LED lighting which produces almost no heat whatsoever for your aquarium.
Please remember we offer the best prices any price beat guarantee on all JBJ products.