so you think the 2217 is way too much flow? from what i've been seeing, i'll be safe with a 2215. i would love to get a 2236 but they cost $160, where the 2215 is $106 + $6 shipping. do you think its worth the extra $48? i still have to buy substrate ($75), lighting ($75), and pressurized co2 (still planning that one out, but you know how much that can be). and thats just for the initial setup. thinking about costs makes me lean towards the 2215. are the 2215's known to die out like that? i've heard one other person say that.