If you are looking for a 100watt light in that price bracket, marshydro isn't the best. Spiderfarmer is a better light. Gives higher ppf/ppfd g per watt and mars ts1000 uses 150watts the SF1000 uses 100, but then there's even better with a even higher ppf/ppfd a little bit more expensive but again a much better light probably the best brand there is in that price bracket. Go with the p1000 viparspectra. 100watts little higher outputs than the SF1000, but that's on paper. I'm running an sf1000 in a 70x70 and I've started with 5 and 1 of them is an absolute monster so much respect for this little 100watt light. I know the TS only uses an extra 50watts but you'd think it'd be better, ITS NOT. Have a look at viparspec they are by far the best in that price range. Good luck.