As far as i know if you add a air pump you will cause exess surface movement & co2 will be lost far quicker than oterwise would be, so i would keep surface movement to a bare minimum.
Hi all
I had a Aqua one regal 100 for about 4 weeks its gone back,very noisy filter, if you add any lights outer than the ones supplied the hood bows, make sure you ask all the right questions when you buy one ,if you look on Aqua one web site you will see that they recomend 1W of light per ltr...