4 x Mars Hydro 900w or Upgrade ?

I have 4 mars hydro ii 900w panels 100 LEDS replaced only blue spectrum as i think these burn the hottest (460nm + 440nm)
All other LEDs seem in good order apart from a couple which i will also replace.

My grow space can either be 6.5ft x 6.5ft( 2mx2m ) or 8ft x 8ft (2.4mx2.4m ) I haven't quite decided yet but
i think the smaller one will accomodate the mars 900w x4 lights better for full coverage in flower.

The lights have been through 3 grows but i have no umol/par meter to test their current output.
According to MarsHydro 15inch is the sweet spot for best even coverage.

I'll be running everything top notch:

RDWC 9 X 9-GALLON BUCKETS + 1 EXTRA FOR RES
18 PLANTS
WATER CHILLER
RO WATER
CO2 TANK (800-1200 ppm)
ADVANCED NUTES
SCROG + LST
6.5FT X 6.5FT TENT
ETC..........

SO PLEACE HELP ME.................Do I use my 2015 MarsHydro 900's or Opt for better.

Id use them.... unless you got cash to blow on a hobby.
If you got the cash get 2 next light megas and you cod grow in concrete.

Gorillabilly said:

Id use them.... unless you got cash to blow on a hobby.
If you got the cash get 2 next light megas and you cod grow in concrete.

Click to expand...

Well im no newbie but no expert either, but i hear a lot high co2ppm high umols and high heat all go in hand.
So while i agree to save a few bucks i should use what i already have.
But what other options could i go for or even add to supplent at the edges etc.

Light names ?
Prices ?
Etc.....?

I'm just trying to save myself hours of more research into which
light is best and budget friendly.

This is my first technical grow with co2-ro-rdwc so i want to get it right.

nextlight mega. 1300 bucks
HLG 600 R SPEC. 800 BUCKS (they have larger).

One of those is what I'd do. I grow under an hlg 550 and a 260xl. Love them

Gorillabilly said:

nextlight mega. 1300 bucks
HLG 600 R SPEC. 800 BUCKS (they have larger).

One of those is what I'd do. I grow under an hlg 550 and a 260xl. Love them

Click to expand...

I'll check them out dude
Thanks

2-3 Meijiu 650w bar fixtures.

The newer Samsung white diode lights will perform much better than the older blurples.

First, unless you’re getting 1,000 micro moles or more across your canopy the co2 is a waste. I suspect those lights aren’t giving you that. The 6.5 x 6.5 size isn’t well suited to most lights ... especially the newer bar/strip style fixtures. You should probably look at QB style fixtures.
You can certainly grow with your existing lights, but start saving for more efficient, better spectrum options

NukaKola said:

2-3 Meijiu 650w bar fixtures.

The newer Samsung white diode lights will perform much better than the older blurples.

Click to expand...

Thanks i take a look

Neoah314 said:

Thanks i take a look

Click to expand...

I got an old mejiu 1200, 300 actual or so I think, its a great hobby light. I keep mothers under it. Great likts for the money.

Bosgrower said:

First, unless you’re getting 1,000 micro moles or more across your canopy the co2 is a waste. I suspect those lights aren’t giving you that. The 6.5 x 6.5 size isn’t well suited to most lights ... especially the newer bar/strip style fixtures. You should probably look at QB style fixtures.
You can certainly grow with your existing lights, but start saving for more efficient, better spectrum options

Click to expand...

This is exactly the dilemma I'm in......I want to supplement with Co2 so high par is needed.
I'm not wanting top peak 1500ppm co2 and 1200/umols but after doing research 300-400ppm co2 in normal
so if i can double this to 800ppm and have 800-1000 umols evenly spread ill be happy.
But being a newbie on umols/par and lack of research into led lighting systems im a little
in over my head.

Just so you know incase you missed.....its 4 x 900w panels each spec at 3.5x3.5 bloom apparently but not as even
spread as id liked, especially like the centre maybe 1100 but edges drop to 150

I dont have money to burn but im just looking at my options as all ive heard marshydro's mixed reviews and
epistar 5w diodes are apparently cheapest of the cheap.

if cash is an issue i would grow with what I got. Co2 benefit is negligible unless you got everything sealed, dialed in and have enough light. It doesn't sound like your checking any of those boxes.. i don't think your ready to worry about co2 for a few grows.

Neoah314 said:

This is exactly the dilemma I'm in......I want to supplement with Co2 so high par is needed.
I'm not wanting top peak 1500ppm co2 and 1200/umols but after doing research 300-400ppm co2 in normal
so if i can double this to 800ppm and have 800-1000 umols evenly spread ill be happy.
But being a newbie on umols/par and lack of research into led lighting systems im a little
in over my head.

Just so you know incase you missed.....its 4 x 900w panels each spec at 3.5x3.5 bloom apparently but not as even
spread as id liked, especially like the centre maybe 1100 but edges drop to 150

I dont have money to burn but im just looking at my options as all ive heard marshydro's mixed reviews and
epistar 5w diodes are apparently cheapest of the cheap.

Click to expand...

Those panels draw 340 watts, not 900 and were originally promoted to replace a 400w hps. Under 1,000 micro moles there’s no benefit from extra co2

Gorillabilly said:

if cash is an issue i would grow with what I got. Co2 benefit is negligible unless you got everything sealed, dialed in and have enough light. It doesn't sound like your checking any of those boxes.. i don't think your ready to worry about co2 for a few grows.

Click to expand...

Oh im definitely ready
I already have 3 grows under my belt so this is my time to shine.
6.5x6.5 tent will be enclosed
and my logic is buy now and dont buy again, unless its ofcourse bad light choices.

So i guess i just need more light

Bosgrower said:

Those panels draw 340 watts, not 900 and were originally promoted to replace a 400w hps. Under 1,000 micro moles there’s no benefit from extra co2

Click to expand...

yes i have the chart showing all the spec and know its replacing 400watt hid's

So ok..........if co2 is a must at 1000-1200ppm
and tent is 6.5 x 6.5

what umols do i need evenly over canopy ?
and which best budget friendly strips panels will cover ?

Much as it pains me to say it, 4 x Mars-Hydro TSW 2000 looks like the best fit for that odd size
If you go 8x8 your costs go up but you have many more options

Neoah314 said:

Oh im definitely ready
I already have 3 grows under my belt so this is my time to shine.
6.5x6.5 tent will be enclosed
and my logic is buy now and dont buy again, unless its ofcourse bad light choices.

So i guess i just need more light

Click to expand...

I love your moxy!! I think your underestimating the complexity of growing with co2 tho. Ill be subbed once you start if you do a journal tho! The most amazing things come from those that stand in the breach against the odds. Alot of tragedies start that way too tho...

Bosgrower said:

Much as it pains me to say it, 4 x Mars-Hydro TSW 2000 looks like the best fit for that odd size
If you go 8x8 your costs go up but you have many more options

Click to expand...

It's either 6.5 x 6.5 ( 2m x 2m ) or 8 x 8 ( 2.4m x 2.4m)
I'm yet to decide.
Would you say they are good enough to benefit from my Co2 supplementing ?

Gorillabilly said:

I love your moxy!! I think your underestimating the complexity of growing with co2 tho. Ill be subbed once you start if you do a journal tho! The most amazing things come from those that stand in the breach against the odds. Alot of tragedies start that way too tho...

Click to expand...

Thanks

I think you may be right although i do understand the process.
at which point of umols does Co2 become pointless ?

I'm already made up on Co2 now so its a definite that i change my light intensity for sure.
I've just checked out Meijiu a8 650w and wow thats some spread/coverage

I will take you word for it though dude but seeing as im set on Co2
I would love as much help as possible to benefit from using it.

I really want to produce that cali cali

Bosgrower said:

First, unless you’re getting 1,000 micro moles or more across your canopy the co2 is a waste. I suspect those lights aren’t giving you that. The 6.5 x 6.5 size isn’t well suited to most lights ... especially the newer bar/strip style fixtures. You should probably look at QB style fixtures.
You can certainly grow with your existing lights, but start saving for more efficient, better spectrum options

Click to expand...

What about 4 x Spider Farmer sf 4000's in a 8ft x 8 ft tent
is that sufficeitn enough for Co2 supplementing

I've fallen in love with this light just shame about the $600 per unit price tag

Neoah314 said:

This is exactly the dilemma I'm in......I want to supplement with Co2 so high par is needed.
I'm not wanting top peak 1500ppm co2 and 1200/umols but after doing research 300-400ppm co2 in normal
so if i can double this to 800ppm and have 800-1000 umols evenly spread ill be happy.
But being a newbie on umols/par and lack of research into led lighting systems im a little
in over my head.

Just so you know incase you missed.....its 4 x 900w panels each spec at 3.5x3.5 bloom apparently but not as even
spread as id liked, especially like the centre maybe 1100 but edges drop to 150

I dont have money to burn but im just looking at my options as all ive heard marshydro's mixed reviews and
epistar 5w diodes are apparently cheapest of the cheap.

Click to expand...

You can always drop some mylar from the ceiling (A little wall) to lessen the space/increase light distribution. It's cheaper to close in your space to work with what you have than to spend on upgrades to cover it all... unless you already have the schematics done and ur mind is set. Either way it seems like it's gonna be a killer grow. Good Luck with everything.