150 watt Hps Speaker Cabinet Grow-Scrog from Seed

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assistantreaper

Member
This is my first grow.
Please feel free to offer advice or ideas
Here is whats happening to catch you up to date

Seeds=Nirvanna northern lights feminized

Soil=FoxFarm Ocean Forest

Nutrients=aerated compost tea

Planted=4/15/11, sprouted 4/20/11

Grow method=SCROG

Light=150 watt hps with built in ballast

Cabinet=old speaker box, dimentions are 32'' tall, 24'' wide, 18'' deep

Ventilation=S&P td-100 mixed flow fan pulling through a Can Filter 2600

I will post pictures as soon as possible
 
A

assistantreaper

Member
gfreeman said:
have you had that 150w on in that? hows the heat?
Click to expand...
75 degrees ambient air temp
83.8 degrees inside the box

this temp was taken after 5 hours lights on. Heat has a tendency to build over time and i have clocked temps in this box at over 90 degrees, however this is very uncommon and temps usually max out about 90 degrees after 18 hours lights on
 
A

assistantreaper

Member
gfreeman said:
your oscilatting fan is above the glass. perhaps switching your fans around?
Click to expand...
the fan above the plexi glass is a 4'' stationary fan positioned a few inches from the hps ballast and is suspended by mini bungee cords in order to dampen vibration. I removed the metal cover on the ballast housing in order to get maximum cooling. Even after 18 hours of lights on the fan provides enough air movement to keep every part of the 150 watt hps warm to the touch and never to hot to touch, with the only exception being the bulb of course.

I feel that an oscilating fan is not necessary in the lower chamber due to the small size of the enclosure as almost any size fan can easily create a "tornado" of air. I would however like to replace the fan in the lower chamber with 2 fans that are identical to the top chamber fan.
 
A

assistantreaper

Member
Okay its TEA TIME!, Step 1=two and a half gallons of dechlorinated waterDSC00578.jpgStep 2=two tablespoons of michorrizal fungi DSC00580.jpgstep 3=half a cup of worm castingsDSC00579.jpgstep 4= one tablespoon of jamaican bat guanoDSC00584.jpgstep 5=one tablespoon of alaskan fish fertilizerDSC00585.jpgstep 6= two tablespoons of molassesDSC00588.jpgstep 7=insert airstone and let brew for about 2 days "after a you've made few batches you will be able to tell when is done just by sight and smell"DSC00589.jpg
i have burned plants in the past with similer recipes so i will be diluting this mixture to 1/4 strength and working my way up with each watering. The goal here is to mainly focus on feeding the soil with the idea that the soil will feed the plant
 
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assistantreaper

Member
okay time for an update,

decided to hold off on the nutrients for a few waterings. i believe she is showing signs of nutrient burn on the tips of the leaves and a few burnt spots on the larger fan leaves.
Here are some new picsDSC00592.jpgDSC00590.jpgDSC00591.jpg
 
A

assistantreaper

Member
DSC00595.jpgthis started happening right after i gave it its first feeding of compost tea. I believe i gave her to much alaskan fish fertilizer "nitrogen" in the mix.

I flushed her a few days ago and since then has only gotten slightly worse.

What do you think i should do?
 
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