Seedling

West123

Member
My seed just popped out the soil last night turned the light on today got the light about 8 inches off them using t5 doing a wet and dry cycle only giving water when the top of the soil drys using bio bizz light mix aswell any advise that people can give me would be appreciated
 

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TrimothyLeary

Well-Known Member
Make sure to pay attention to your temps and humidity, for both day and night..
These are two of your limiting factors that many ignore, to their disadvantage.

You can probably drop that light by a couple more inches. Definitely do so if they get leggy.

What is your plan for feeding? I've never used that soil but it seems to be closer to a soilless mix, which means you'll be feeding sooner than normal soil.

What are the dimensions of your space?
Do you plan to transplant to larger pots?
What variety of seed?
 

West123

Member
Make sure to pay attention to your temps and humidity, for both day and night..
These are two of your limiting factors that many ignore, to their disadvantage.

You can probably drop that light by a couple more inches. Definitely do so if they get leggy.

What is your plan for feeding? I've never used that soil but it seems to be closer to a soilless mix, which means you'll be feeding sooner than normal soil.

What are the dimensions of your space?
Do you plan to transplant to larger pots?
What variety
Make sure to pay attention to your temps and humidity, for both day and night..
These are two of your limiting factors that many ignore, to their disadvantage.

You can probably drop that light by a couple more inches. Definitely do so if they get leggy.

What is your plan for feeding? I've never used that soil but it seems to be closer to a soilless mix, which means you'll be feeding sooner than normal soil.

What are the dimensions of your space?
Do you plan to transplant to larger pots?
Wha
Make sure to pay attention to your temps and humidity, for both day and night..
These are two of your limiting factors that many ignore, to their disadvantage.

You can probably drop that light by a couple more inches. Definitely do so if they get leggy.

What is your plan for feeding? I've never used that soil but it seems to be closer to a soilless mix, which means you'll be feeding sooner than normal soil.

What are the dimensions of your space?
Do you plan to transplant to larger pots?
What variety of seed?
Temps am at 80 the humidity is at 59 % got a oscillating fan in there to where should I have the thermometer cus that is in a shaded spot not under the light or is it best to have it at pot level I am using water probably till week 2 veg has I am gonna pot up using all mix and some great white as well using bio bizz feed chart aswell
 

TrimothyLeary

Well-Known Member
80 is a little high but not necessarily a problem. 75 is about optimum. Your humidity is fine, but in flower you may want to drop it to avoid mold. I've never experienced mold indoors myself, at similar RH.

An oscillating fan is great at moving air, and works well for cooling your plant off, if you're also using an active exhaust system. You still need to exhaust the warm air, otherwise, you're just blowing warm air at the plants.

If you already have active exhaust, what is the CFM rating, and what are the dimensions of your space? What dimensions for your passive intake?
 

West123

Member
80 is a little high but not necessarily a problem. 75 is about optimum. Your humidity is fine, but in flower you may want to drop it to avoid mold. I've never experienced mold indoors myself, at similar RH.

An oscillating fan is great at moving air, and works well for cooling your plant off, if you're also using an active exhaust system. You still need to exhaust the warm air, otherwise, you're just blowing warm air at the plants.

If you already have active exhaust, what is the CFM rating, and what are the dimensions of your space? What size is your passive intake?
I've got a 5 inch outake and a 4 inch intake but I am not using them yet cus I thought the oscillating fan would do the job for now but I guess I am wrong I will switch them on and see if that makes a difference with temps peace
 
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TrimothyLeary

Well-Known Member
Yeah, I'd keep the exhaust going at all times, or at least on a frequent timer.

You may want to check out some guides on making your exhaust system more efficient. You can waste a lot of energy and reduce the lifespan of fans if the space isn't configured properly. Your intake sounds small; intake space is usually larger than the exhaust hole, since exhaust has the benefit of being active. That means your fan may have to work harder, and may never maximize airflow. Inline "booster" fans are adequate, but more long lasting, efficient, and usually more quiet, are the higher end Inline fans. If you plan to grow more than one crop, invest in a good exhaust system.

This could become a big problem later in the grow, during flowering, especially if you plan to control odor with a carbon filter.
 

West123

Member
Yeah, I'd keep the exhaust going at all times, or at least on a frequent timer.

You may want to check out some guides on making your exhaust system more efficient. You can waste a lot of energy and reduce the lifespan of fans if the space isn't configured properly. Your intake sounds small; intake space is usually larger than the exhaust hole, since exhaust has the benefit of being active. That means your fan may have to work harder, and may never maximize airflow. Inline "booster" fans are adequate, but more long lasting, efficient, and usually more quiet, are the higher end Inline fans. If you plan to grow more than one crop, invest in a good exhaust system.

This could become a big problem later in the grow, during flowering, especially if you plan to control odor with a carbon filter.
Yeah, I'd keep the exhaust going at all times, or at least on a frequent timer.

You may want to check out some guides on making your exhaust system more efficient. You can waste a lot of energy and reduce the lifespan of fans if the space isn't configured properly. Your intake sounds small; intake space is usually larger than the exhaust hole, since exhaust has the benefit of being active. That means your fan may have to work harder, and may never maximize airflow. Inline "booster" fans are adequate, but more long lasting, efficient, and usually more quiet, are the higher end Inline fans. If you plan to grow more than one crop, invest in a good exhaust system.

This could become a big problem later in the grow, during flowering, especially if you plan to control odor with a carbon filter.
Got the fans on now got it on a dimmer too so the fans ain't wasting so mutch power it's dropped the temp from 83 to80 now also humidity level is at 44 now room size is about 120 cm by 90 cm by 200 cm high got a humiderfire aswell if that would get the humidity up to 60 percent
 
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