[martinmcnally]

That was for a little tiny tank and it was probably overkill but with the dimmer it can always be turned down. I believe it was for a 6x6x12 tank and the cost was approximately $150 but that setup could easily be put on a larger tank.

For 20x20x20 I would recommend you go with two 6x12 heatsinks side by side. That gives you one square foot heatsink which would be perfect for that size. My little formula suggests around 25 individual LEDs for that size of tank so 13 of our boards.

Heatsinks would be $60, LEDs $130, connectors approx $10, glue $10, optional lenses $26

You would then either choose a dimmable or non dimmable driver. With the dimmable you then need the approx $50 dim kit.

So its going to be around $230 plus driver (and optional dimmer). If you want I could put together a more accurate quote over email.

Actually we do have the 24 LED kit on the website with a discount on there total price is $220, you just add the heatsink (or build your own).

Martin