helps a bunch. thanksThe guideline of 30-50 Watts per square foot that @MarshydroTina gave you is probably a general number they've been giving customers for years now but it's really based on blurple tech which is not as efficient. The TS-1000 is actually a quantum board with white light technology, what that means is it's efficiency is far above their normal blurple lights. 150 Watts of TS-1000 gives out alot more light then what a blurple light with same wattage would do and that's the problem with recommending lights based on wattage, it does not take the light's efficiency into consideration.
Read more here: https://www.ledgrowlightsdepot.com/blogs/blog/16326275-how-many-led-watts-are-required-per-square-foot-of-grow-space
All that being said however, i still say the TS-1000 is really stretching it for a 2.5x2.5, 5 square feet is the max area i'd use it at. Sure it will cover that 2.5x2.5 area but the coverage at the edges won't be good enough in flower.
Anyway as for light height distances, this should help you:
Between 200-400 PPFD: This is great for seedlings, clones, and mother plants.
Between 400-600 PPFD: This is great for early to late stage vegging cycles.
Between 600-900 PPFD: This is great for the flowering, fruiting, or budding stage of plants.
Knowing these numbers all you have to do now is figure out how much PAR your light outputs at a certain height. Looking at their website, 24" will do 325 so that's perfect for veg, maybe drop it down to 20"-22" during late veg stretch. You can ask Mars Hydro for the numbers at lower heights... Hope this helps.
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