This is why I use submersible LED tubes because they are made waterproof. Heat dissipation is not an issue as it is submerged at the water surface which can save your heating bill and reduce transmission loss. The only negative of these submersible is that the light intensity is on the low side, so you need more of them to compensate.T
Most hooded tanks can be fitted with most LED options as long as heat dispensation is addressed
(I’d definitely insist on excellent waterproof rating as condensation on the light unit and humidity will be greater)