help me choose lighting

so i have a 72" long tank and a hagen glo 48" dual bulb t5h0 fixture.. and at first it has a marine glo and power glo and i would get brwn algea all over the tank mostly my white sand, so i was told to change em as there "wore" out so i went to the store and was told by the guy in the store to use ocean sun 10,000k and a coral sun actinic 420nm bulb so i bought them but they didnt help still get brown algea on my white sand... so i thought hmmm, i put a single t8 48" fixture on the tank and it been on for 2 weeks and i havent got a speck or brown on my white sand it seems.... i usually leave my t5h0 on from 315-915pm and the t8 on from 115-915pm...

when searching online i came across t5h0 bulbs that are in the 6700k spectrum but are still 54watts (108watts total)... now im curious will they still grown algea like sob like im having trouble with now ? or will they be very similar to a 48" dual t8 bulb fixture with 6500k 64watts total ?

here are the bulbs i found online, i thought maybe 1 of each or maybe 2 of Coralife bulbs...

http://www.bigalspets.ca/fish/lighting/6-700k-t5-ho-fluorescent-lamp-54-w-48.html

http://www.bigalspets.ca/fish/lighting/sps-t5-ho-surface-water-lamp-54-w-48.html

i mean there gotta be something that going on cuz there lots of you guys running dual or even quadriple t5h0 fixtures on your tanks without issue's... so what do you guys think ? any help would be great

Redtail Monster said:

Doublepost?

Click to expand...

oh ? there is ?... doh can someone delete one ? the site has been going in and out here on me sorry guys

Redtail Monster said:

Kinda figured that, the site has been awful, just figured I would throw a heads up...

Click to expand...

no worries thanks dude anyone have any thoughts of lighting ?

anyone ??

yea thats what i was thinking just a dual bulb 48" with two t8 6500k bulbs ...i dont have a lowes close to me closest places i have are canadian tire, home hardware, rona, walmart.. can shop lights sit right on top or do they need to be hung above the tank ?

so basically anything like a 8000k and up is more towards a saltwater tank then correct ?