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Hi. The secret is not to leave airpocket in the carbon. To pack it well I im using vibration plate. I buy good carbon and my home made filter last at least 2 years.

Hi. It could be done with differents ways. 1. Cold water res, 3 ss coil and 4 water pums. Each res have its own cooling loops. The chiller cools cold water res. 2. Using chiller, one pump and manifold with 3 valve( one valve for each coil. Those are using for set water flow for individual...

Hi. Take the air from outside. I have been runing 4x600 aircooled without problems. My light fan was 1000m3/h dialed a little down. Cool night air cools great:)

They will be OK. I have got few power outages during flowering, nothing happen. Relax:)

I have drilled small hole in pcv, then screwed it.

When I have got high rh in closet during drying, I turn on small heater and set exhaust fan temterature to 30C. It is helping a lot.

No. 21g / 100ml h2o at 25 C. Try warm your solution a little.

Doesnt matter. You can use it to control solenoid valve or propane generator. It gives 120volt, so you can power directly your solenoid valve.

Maybe you could use apc ups to power the fan and cotroler when are power outages.

Hi. As speed controller I use toroidal transformer with 6 output. It gives 90,110,130,150,180,210 voltage. I can change speed by multi point switch or by relay. The motor doesn't make hum.

They are in soil??? Ph 5.8 is for soilless medium. You should ph to 6.5

Hi. Use insulated ductwork, try bigger fun with good speed contoler. Try not to move air so fast, use bigger diameter ducts , smooth path. Hang fun on rubber. You can buy duct silencer in hvac shop.

The 600 watts hps is the most efficient lamp. 400w put 55 000lm 600w put 100 000lm 1000w put 135 000lm. Don't mess with cfl, buy 600w. It is hot, you should have got good ventilation.

Hi. I have flushed cubes last week, nothing change. Ph Is stable, it doesn't change so much. I bump it to 5.9. They drink around 3-5l water daily. I top res daily. Ec every day goes down. Yesterday was 1.3, today is 1.22. They grow nice, now start filling buds. Today I Will put second temp...

I have got 2x3x6 cab with cooltubed 400watt hps. With good strong fan temps are ok. It's SOG grow in 4x4x4 *rockwool cubes.

I use ultrasonic fogger.

When is cold outside I have condensation on non insulated fan housing and T fittings. I disconnect duct form outside and use room air do cool my lamp and dump hot air back to my growroom. This keep room nice warm.

I use a transformer with 6 secondary winds. In socket I have got 240v, from transformer 90,110,130,150,170,210v. I change voltage by multi pole rotary switch. Zero hum from motor. Big transformer with knob also works without hum.

Hi. I use electric dampers. When is too cold thermostat close vent damper and open second damper. Now air goes throw carbon, fan, cool tube and back to my space. In the grow box I have got small eletroc oil heater. When is hot vent damper open and second damper close. Air goes throw carbon...

I have got special clothes for my garden only. When I work with plans I wear latex gloves. After plant work I can back home, and don't smell like coffeeshoop:)