Raise the bridge?
Or lower the water?

Jumping out one red led would work too, without added expense.
And would still be enough light for that small vegging cabinet.
I just figured that you will be flowering with this light and could make use of the extra photons.

Something to keep in mind.
It's very easy to overwater with leds.
Less heat translates to lower transpiration.
They sweat less, they need less.

Just thought I'd mention that because I messed up my first 'lings under leds.
Tried to treat them like HPS'ers.
Drowned them, I did.
It was not pretty.

Aloha,
Weeze