With LED technology progressing relatively fast and your unknown timeframe of possibly years it is not really your best option to spend way more now for its use in the future.
Kessil is dimmable down to at least 10% so no real problem there..
It is not difficult nor expensive to high light a 6.6gal tank.
Kessil is dimmable down to at least 10% so no real problem there..
It is not difficult nor expensive to high light a 6.6gal tank.