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OOPS, that was Seed 3, looks like seed 2 is a goner.

Well, finally! Seed 2 has arrived, too late for the competition, but here for the ride any way. Took forever to get thru the plastic, almost a month.

Too early to call it a male?

Guess they do most their growing outdoors?

The perimeter is calculated first, then the length is multiplied to get area, his figures are per inch of heat sink, so the area is the same as the perimeter, if you consider 36.4 in and 36.4 in^2 to be equal. :)

There has been a slight discrepancy between the data on Page 1 of this thread and the 'official' HS-USA data, but the discrepancy is small, in this case 36.4 in^2 vs 35.27. I think the difference was discovered to be a minor math error on Page 1, but don't sue me if i am wrong.

1. Lots do veg and grow under the same light and choose 3k because that is prefered for flower 2. Don't know for sure, but i think series is the way to go 3. https://www.rollitup.org/t/heatsinks-for-diy-led-lamps.851907/ has the heatsink info you need 4. for a 10 sq foot area like yours, 8...

Provision has 1/2 off on purple widow, code propromo15

Looks good so far too me

What is it about the trichs give you that idea? Thanks.

I bet you could flip those heat sinks on ebay for a profit, with a well placed link on some growers boards, discount for RIUers for sure.

All of the mass transfer of the oxygen from air occurs at the surface. My point is the surface of a bubble adds a lot more surface area and contract time than is available just at the surface. Turbulent surface aerators take advantage of this fact. So do air stones. I maintain air stones produce...

The surface of the bubble as it rises through the water is way more important than when the bubble pops on the surface. There is Air on the surface for sure, but the contract time at the surface is less that the contract time under the surface. See what I mean?

A couple of things, o2 solution in water is a mass transfer problem that occurs on the bubble surface. The bursting of the bubble on the surface isn't the mechanism of interest. Dwell time under water and bubble size are the determinant factors. SO put the bubbler as deep in the water as...

Week 2 update Here are the other 2 seeds i tried to pop, they seem like they are a no go, but i planted them any way. And here is the week 2 picture of seed 1.

Nice heat sink too!

That wasn't funny.

Don't forget the heat sink and maybe a fan. And the reflector or not.

Hey troll fuckuh! There, that ought to round out the list.

oh i remember this... Mars will be fine, there are better, apache, a51, diy cob. Adding that cfl will do little, wont hurt tho. Topping helps if you have a height issue.