Mars Hydro TSW 2000

[Sly1247]

Hello guys. My names Martin, this is my first post so Hi. I'm having a slight problem with my grow light. it's a mars hydro tsw 2000, it's in my 80cmx80x200 grow tent. I started with my light just above 30inch from seedlings running the light at 75% from the dimmer. for the first couple of days things seem to be going well but for the last week it really slowed down. my problem is I have googled best height for the light during seedling and get a mixed opinion from everyone, some say above 30 with the flight on max and some say dim all the way down and have it 14inch away from light. at 75% and 30inch it seems far too bright in there for such a small plant (seedling). I hope someone could shed some light on this for me. Thanks Guys.
Happy Friday

 

[Stormblessed]

Hello and welcome to
U could probably go to 3 feet and 50% till it gets some more leaves

 

[Sly1247]

Thank you for the reply. I will give that a go

 

[Stormblessed]

Any pictures of it?

 

[Sly1247]

yeah sure. here you go.

 

[SoGnotSOG321]

Do you really think you need that much light on seedlings? I put my elcheapo full spectrum 30w blurple over mine. About 12in above. You have a lot more power though, just giving it too much power Capt! Welcome and good luck

 

[Sly1247]

Hi SoGnotSOG321. ill give Stormblessed advice a go, the light is 300w true watts so dimming to 50% should put it at about 175watts and being 32 inches from seedling shouldn't be too much light..... i hope

 

[bluter]

check mars recommendations. they publish figures for each of their lights on height from canopy etc.
@SmokeSara is the online rep, and they have a couple active threads going on their lights.

 

[Hrenklin]

Ive run a couple runs with a mars tsw 2000. I wouldn't say the light is the issue. Can we get a few extra details. Like watering levels, nutrients, ph, soil mix etc.

 

[Sly1247]

@Hrenklin Thanks for the post. im using biobizz all mix. i damped it 36 hours before i planted the seed. i used a spray bottle for first 24 hours then just poured the water slowly in a little circle around seedling. the water im using is bottled tesco ashback its ph is around 6.5 out the bottle and e.c about 146 and ppm 76.

 

[bluter]

only see the one seedling and it looks a bit yellow ..

 

[Sly1247]

im new to the seedling stage. my friend had to get rid of a bubba kush plant few months back he vegged for 8 weeks so i took it off his hands and took over and got myself the gear. i topped it left it a couple of weeks then flipped it. this was my first time ever and managed to get just over 4oz. i was using the same ashbeck water as im using now on seedling and ran into no problems with e.c or ph so thought i would stick with the same water. also im using bio bizz feeds. heres some pics of the bubba kush.

 

[Sly1247]

only see the one seedling and it looks a bit yellow ..

yeah i was thinking the same thing about it looking not so much yellow but a lime green. the others are germinating atm

 

[Hrenklin]

I say keep patience, the work is happening below the soil. Check back in a couple days

 

[bluter]

you shouldn't need to feed that soil mix at all right now if it is bio-bizz all. it should be good for at least a couple wks.
should be good to just water and go.

 

[Sly1247]

I say keep patience, the work is happening below the soil. Check back in a couple days

Will do bud. Thanks again for the advice. ill be back!

 

[Sly1247]

you shouldn't need to feed that soil mix at all right now if it is bio-bizz all. it should be good for at least a couple wks.
should be good to just water and go.

yeah i was aware it comes with enough feed to keep it going until around 2-4 weeks so i have only been giving it water. but thanks

 

[bluter]

i don't run mars - but for a generic rig i run a simple formula so long as it has a dimmer.

seedling - 30 to 36 inches away dimmed to 50%.
ramp up the light incrementally to 75% or so over the first 3 wks after breaking ground. sometimes this goes faster. increase light intensity as the plant builds.

veg - 30 - 24 inches. ramp the light up from 75% to 90% or full up over 2 - 3 wks during this time. will usually ramp up within the 2 wk period or faster. won't take more than 3. i let the plants reach into the 24 inch mark then raise the light another 6 inches. i run extended veg at the same height if i go long.

flower - 24 inches. run the rig at 90% to full up. i try to keep flower at 24 inches, raise the light as the plants grow in to it.

used to build custom rigs and that is what i recommended to my customers.

this is my veg rig :

clearance

• bluter
• Apr 7, 2018

it's a 200 watt true draw, good for up to 4 x 4 in veg, i actually run it in a 3 x 3 space and feel it does better there.
your light should be a bit better over all. mars is not the most efficient set up, so we're probably pretty close.

hope that helps.

 

[bluter]

lol it's right in the mars website :

What is the recommended hanging height and hanging hours ?

During seedling: 18/6 or 20/4; above 30''
During veg: 18/6 or 20/4; 18~24'' above canopy
During flowering: 12/12; 12~18'' above canopy

it's in the tsw 2000 faq

 

[Sly1247]

i don't run mars - but for a generic rig i run a simple formula so long as it has a dimmer.

seedling - 30 to 36 inches away dimmed to 50%.
ramp up the light incrementally to 75% or so over the first 3 wks after breaking ground. sometimes this goes faster. increase light intensity as the plant builds.

veg - 30 - 24 inches. ramp the light up from 75% to 90% or full up over 2 - 3 wks during this time. will usually ramp up within the 2 wk period or faster. won't take more than 3. i let the plants reach into the 24 inch mark then raise the light another 6 inches. i run extended veg at the same height if i go long.

flower - 24 inches. run the rig at 90% to full up. i try to keep flower at 24 inches, raise the light as the plants grow in to it.

used to build custom rigs and that is what i recommended to my customers.

this is my veg rig :

clearance

• bluter
• Apr 7, 2018

it's a 200 watt true draw, good for up to 4 x 4 in veg, i actually run it in a 3 x 3 space and feel it does better there.
your light should be a bit better over all. mars is not the most efficient set up, so we're probably pretty close.

hope that helps.

Yeah that's great thank you for the advice and i will take the info on board. ill send a pic in a couple of days and hopfully see some progression.
Cheers Guys