hello there, i went out yesterday and spontaneously decided to upgrade to a marine set up instead of sticking with freshwater! i have no knowledge or experience but am excited to get started, i bought the fluval m60 as it's the perfect size for the room and got it at a discount price which worked out great. i didn't realise till today when i was about to start getting it ready to fill, that the store had forgotten to include the drainage valve tap so i've had to put on hold for a few days till i get one - i thought this would be the perfect time while i'm waiting to get advice with how i should go about filling it and just all the most basic/simple tips because i'm pretty clueless!