How close to keep 150w hps when plants germinate?

[WeedyBlooDShoT]

Headline states it all.Its been awhile and i just wanna make sure. Like i said, 150W HPS. Have 2 germinated and waiting on the other 4. Temp rage 80-83Deg F around reflectore. Do not have a dome, they are in party cups. Please and thank you RUI.

 

[Gary Goodson]

10-12 inches will be fine, it's more about temps than light intensity. Those little gals can handle way more than a 150 hps as far as intensity is concerned. Low 80's for seedling shouldn't pose a problem. I always try to target mid 70's though

 

[WeedyBlooDShoT]

10-12 inches will be fine, it's more about temps than light intensity. Those little gals can handle way more than a 150 hps as far as intensity is concerned. Low 80's for seedling shouldn't pose a problem.

Thannk you sir

 

[Gary Goodson]

Thannk you sir

No problem. One more tip for that light, try not to raise it over 12 inches unless temps are really out of control. It does not have deep penetration, maybe 12-24 inches total.

 

[WeedyBlooDShoT]

same range for when i start veg and flowering? 12"

 

[Gary Goodson]

same range for when i start veg and flowering? 12"

Na, you're gonna want to move it closer as they get older. I've gone a as close as 2-4 inches by the end of flower. Keep a small desk fan blowing either on the light or between the canopy and the light.


I was saying 12 inches is about the highest you'll want the go

 

[WeedyBlooDShoT]

Na, you're gonna want to move it closer as they get older. I've go a as close as 2-4 inches by the end of flower. Keep a small desk fan blowing either on the light or between the canopy and the light.


I was saying 12 inches is about the highest you'll want the go

Have to refresh my memorey on alot. Thank you again.

 

[Gary Goodson]

Have to refresh my memorey on alot. Thank you again.

Keep us posted on your progress. Don't forget to post pics too.

Happy growing and good luck

 

[sunny747]

Save your other seeds.. That light will flower only 1 medium size plant in a 2x2 space. If you keep them in 1/2 gallon pots you may be able to flower two plants. I have two 150's and they're a decent starter light, but they run hot. Blow a fan across the light. 12 inches is probably decent height to start. You might be better off starting them under a few cfl's until they have a few sets of leaves.

Don't put a dome on them. It will heat the internal temps inside the dome and plants will stretch like crazy.

 

[grapefruitmarmalade]

You can only run one plant under a 150 watt HPS. And light intensity is very much a problem if you keep the light too close. Good luckl!

 

[Gary Goodson]

Save your other seeds.. That light will flower only 1 medium size plant in a 2x2 space. If you keep them in 1/2 gallon pots you may be able to flower two plants. I have two 150's and they're a decent starter light, but they run hot. Blow a fan across the light. 12 inches is probably decent height to start. You might be better off starting them under a few cfl's until they have a few sets of leaves.

Don't put a dome on them. It will heat the internal temps inside the dome and plants will stretch like crazy.

You can only run one plant under a 150 watt HPS. And light intensity is very much a problem if you keep the light too close. Good luckl!

Come on guys, let's give correct info here buddies. You can run 4 plants in that 2x2 area with that 150 hps. You just have to understand what you're working with. I ran four 3 gal smart pots in a 2x2 with no problems. I have a thread about it, I'll try to find it and post the link. You can veg 1 plant for 6-8 weeks, top it, train it, and bush it out like this

^^^that is a single plant vegged for 8 wks, then flowered under a 150

^^^ and this is a pic with 4 plants in 3 gal smart pots. This way actually yielded more and with less veg time. Same setup 2x2 with a 150 hps

As for light intensity, trust me when I say it's the heat NOT the intensity that will kill that little seedling.

 

[qwizoking]

If they havent sprouted..no light

 

[Gary Goodson]

If they havent sprouted..no light

^^This is correct

 

[GrowUrOwnDank]

As always beautiful @Gary Goodson.

@WeedyBlooDShoT I personally start my seedlings on the windowsill and under a very small CFL like <20 watts. Simply because those little guys are only gonna absorb so many photons. Much of the light from that 150(I got one too) is wasted. Not a big deal really, just saying. I also concur with 12" and not burning up the little ones. And yeah, if you got enough airflow you can drop the light down to 2"-4" during flower when the plant is well established.

 

[brimck325]

You can only run one plant under a 150 watt HPS. And light intensity is very much a problem if you keep the light too close. Good luckl!

If intensity is a problem how do seedlings live outdoors under the sun?

 

[WeedyBlooDShoT]

Come on guys, let's give correct info here buddies. You can run 4 plants in that 2x2 area with that 150 hps. You just have to understand what you're working with. I ran four 3 gal smart pots in a 2x2 with no problems. I have a thread about it, I'll try to find it and post the link. You can veg 1 plant for 6-8 weeks, top it, train it, and bush it out like this
View attachment 3443966
^^^that is a single plant vegged for 8 wks, then flowered under a 150
View attachment 3443970
^^^ and this is a pic with 4 plants in 3 gal smart pots. This way actually yielded more and with less veg time.

As for light intensity, trust me when I say it's the heat NOT the intensity that will kill that little seedling.

Gary i did a one plant last time-- this time I am trying to do 3. in 10" 1 gal bucket - pretty sure that was the size.... Im not growing sanything special fyi. bagseeds. I just have an issue about buying seeds online. i would love to i just still skecptical.------ 6-8 seeds hopefully 3 females. i know how to controlll head issue- have my fans and ac. -- area size- 5.7' tall- 2.7 depth and 4ft width. think i can flower 3? should i use bigger pots?

 

[WeedyBlooDShoT]

As always beautiful @Gary Goodson.

@WeedyBlooDShoT I personally start my seedlings on the windowsill and under a very small CFL like <20 watts. Simply because those little guys are only gonna absorb so many photons. Much of the light from that 150(I got one too) is wasted. Not a big deal really, just saying. I also concur with 12" and not burning up the little ones. And yeah, if you got enough airflow you can drop the light down to 2"-4" during flower when the plant is well established.

I was thinking of starting with cfls this time- but my 150 worked just fine last time for a first grow and i am on a budget--- im ganna barley have enough for my ffof and perlite--- i probly not even ganna buy worm casting or nutes for that matter

 

[Gary Goodson]

Gary i did a one plant last time-- this time I am trying to do 3. in 10" 1 gal bucket - pretty sure that was the size.... Im not growing sanything special fyi. bagseeds. I just have an issue about buying seeds online. i would love to i just still skecptical.------ 6-8 seeds hopefully 3 females. i know how to controlll head issue- have my fans and ac. -- area size- 5.7' tall- 2.7 depth and 4ft width. think i can flower 3? should i use bigger pots?

Remember, bigger pots = bigger roots = bigger yield. Btw, I just found out my phone is racist! It kept trying to autocorrect "bigger" to the N word

So, to answer you're question, yes those pots will work, but you would get a bigger yield with 2-3 gallon pots. I also understand that might not be an option so the best thing to do would be to induce flower early. I'd say wait for 4-5 nodes, top, then flower.

I was thinking of starting with cfls this time- but my 150 worked just fine last time for a first grow and i am on a budget--- im ganna barley have enough for my ffof and perlite--- i probly not even ganna buy worm casting or nutes for that matter

Wait, what? No fertilizer at all ffof will only last about a month or so.

 

[WeedyBlooDShoT]

Remember, bigger pots = bigger roots = bigger yield. Btw, I just found out my phone is racist! It kept trying to autocorrect "bigger" to the N word

So, to answer you're question, yes those pots will work, but you would get a bigger yield with 2-3 gallon pots. I also understand that might not be an option so the best thing to do would be to induce flower early. I'd say wait for 4-5 nodes, top, then flower.


Wait, what? No fertilizer at all ffof will only last about a month or so.

Ill try and go up one size in pots...Idk if i wanna top this grow- i did my first. Wanna try a regular ine. maybe i will top 1 of 3. take a look at the set up.... The fans are not in yet. The clip on will be once i buy another the motor burnt out >.<..... ANd i baught that soil for starters since there is no local nursery that sells what i really neeed. It does have ferts in it... Hope not to much for the seedings.

 

[GrowUrOwnDank]

I was thinking of starting with cfls this time- but my 150 worked just fine last time for a first grow and i am on a budget--- im ganna barley have enough for my ffof and perlite--- i probly not even ganna buy worm casting or nutes for that matter

I feel ya brother. I just use a plain ole ordinary CFL like you use around the house. Sounds like you gotta handle on what you are doing. The HPS will do fine. I actually like the 150 for a micro grow.