I've read a bit on lucas too, actually trying it in my 5-gallon DWC. I must have missed the formula you just shared. If I understand this right, looking at a new 5w pump in front of me, I estimate about 2LPM for every gallon.

The pump I've used so far is only 3LPM and honestly I'm quite pleased with the results. I was hoping to use my new 5w 9LPM on two 5-gallon buckets, but from what you're saying I should have one pump on each bucket for ideal conditions. I'm sure it'll be fine using the one for now, I'll pick up another in a couple weeks.

No doubt, I've always been a bit of a boyscout that way. I have a few spare pumps right now. I wanna go perpetual so I'm sure they'll come in handy for cloners and such too.

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Yes!! its always good to have spares! imagine you check your babies before you head off to bed only to discover your pump has died! oh noes! and the stores wont open for another 8 hours eek...im very big on back up plans

In regard to backup plans, if I absolutely must I can easily switch to hempy buckets mid grow. Done it before.

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