just a FYI thread on my upcoming upgrade/downgrade.

[powerboy]

the 2x6 is probably refering to the wall studs and a non load beaing joist (aka ceiling rafter of something)

i hope its a lot beefier than 2x6 for your sake.

as far as beefing them up, just add one to the existing joist.

ie if its a 2x8/10 (hopefully) then get another one the same length, and sandwitch it against the existing. i would use pl premium construction adhesive and a lot of nails, or better yet screws. you can do this for as many as you need to cover the area of the tank and maybe one more on either side.

this should do the trick for ya.

just make sure its also sitting on the concrete form/frame whathaveyou.