My girlfriend has a 24g aquapod with a 2x27w CF and a 70w MH. I want to upgrade her tank as it is getting to crowded. Her stand will hold up to a 65g so thats what I want to go with. Going DIY style with light like I did on my 125g which has 2 x 400w MG and 4 x 54w T5HO. Being that the 65g has a cross brace I need to go with two MH. What wattage do you recommend on the MH? I have one extra 400w MH ballast but thats too much IMO as then I would need to get another one. I was thinking maybe 2 x 175w but I see some people with 2 x 250w MH but I was thinking that was too much but could be wrong. Whatever you guys recommended I will go with.