Tip 1 - Lamps
Lamps can greatly lose lumen output over the course of 9 months to a year. In fact, they usually depreciate in lumen output by 30% over this time frame. This means that you will get 30% less yield from your plants but it is costing you the same amount of electric to run them. It is therefore a false economy to run old lamps.

Tip 2 - Seedlings
When using rockwool to raise or start seedlings; make a stock solution using your grow nutrient or similar to a TDS/CF reading of 10-12 then pH adjust that stock solution down to 5.5 pH. Decant this solution into a bottle so you can feed this to the rockwool as and when needed. Shake bottle well before sprinkling. Do not over soak or let rockwool sit in a puddle of nutrient.

Tip 4 - Don't over do it
Less is best; the name of the game in hydroponics is to never over do it. i.e. under feed them, under light them (within reason), under do it and you'll get a result, over do it and problems will happen.

Tip 5 - Lighting
Typically the more light you give the plant , the better the yield will be. Double the lux, double the yield.
Approximate coverage with:

•   400W is 1   m2:   5-10 plants
•   600W is 1.5m2:   7-14 plants
• 1000W is 2   m2: 15-20 plants

Tip 6 - The night cycle
During the night cycle, make sure the plants are kept in complete darkness especially during the fruiting and flowering stage. Any light can slow or even put a stop on this process. So go in there at night and make sure no light is visible - even LEDs
can upset this process.

Tip 7 - Light movers
When employing a light mover it is strongly recommended that you use either 1000W or 600W lights. A 400W or 250W will under light the environment when the light is tracking back and forth over a distance of 6 feet. We recommend a 1000W when using a light mover.

Tip 9 - Water temperature
With water heaters they are only to be used in environments that are very cold. You are not meant to heat the water, just remove the chill from it. i.e. the water would still seem colder than it would hotter. Feeding your plants warm water is more detrimental than feeding them cold water.

Tip 11 - Seedlings
Do not plant young plants into systems unless they are showing good root development. If no roots are showing wait till there is before transplanting to your system. If you plant too soon, the rootball becomes saturated and this prohibits the plant's growth.

Tip 12 - Warning - pH up & pH down
Never ever mix pH up and pH down together directly in a concentrate. This stuff is very dangerous and needs to be handled with care. Use one pipette for each job and color code the pipette to the bottle.