Sounds like we have similar sized tanks and wife's that curtail our spending. Lol.
Only constructive advice I can give is you'd probably have difficulties with the spread of the light with it being so close to the water.
My tanks are 400mm wide (550mm high) and originally had a fluval aquasky fitted, you either have to position it towards the back so the plants at the rear get decent coverage and then the plants at the front suffer, also turning it up to compensate for the front plants gives you to much intensity to the back ones.
I've ended up adding an aquasky 2 to each tank which seems to have given a noticeable difference to plant growth and also an even spread. The light at the back is on about 40% and aquasky 2 at the front about 50%.
Quite low powered lights but they're only low tech so seems to work out ok.
Some good information for you here.
My fluval 3.0 sits very close to the water, meaning light is much stronger in the central strip than at the front and back of the tank Has anyone experimented with raising the height of a unit like this? Is it worthwhile? Easy to do? I've got a bit of BBA forming in the centre, where the...
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