They are also good for protecting the leds
The spectrum on the es300 is quite flower centric, you might get a bit of stretch with them. There is very little info on this forum on these lights, some go poopoo on them for being a bit less efficient than hlg and the likes.
Personally i think they would flower quite fine; they do a red enhanced spectrum thru white phosphor diodes, similar to a high cri chip, and from what ive seen from
@Prawn Connery s boards in a offsite side by side its a really good ticket for flower. Op, please post your grow, a loot of peoople wanna see this light in actioon.