it's not a dumb question , i have one on my 25 and it's does improve growth but its not as great as pressurized. I still use excel with mine and dont use the crappy lil packages that come with it. My advice would to be jus tto buy the ladder.
So if it still costs the same, why wouldn't you get the one that is pre-made, looks better, is better insulated, and comes with the ladder for diffusion? That doesn't make any sense to me.
That's what I thought, Mg. However, the reasons Dbray was stating didn't make any sense to me. If it costs the same, why not go for the one that is better?
And they do sell just the ladder, on that site anyway.