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GrowFAQ : Hydroponic system
construction : Slab and tray
systems

MrSoul's rocks and tray system

Added by:
Bongaloid  Last edited by:
10k  Viewed: 672 times

Rated by 5 users:
8.60/10

INTRODUCTION

MrSoul's
hydro system is a modified slab and tray, in which the
slabs or rockwool have been replaced with clay grow
rocks. MrSoul finds that this setup works better and the
expanded clay medium is reusable.

4 x 4 CELLS

The grow space is
divided into 4' x 4' cells, over each of which a 1000
hps is centered. Each cell consists of 5 Hyrofarm
Quantum RW slab trays (four parallel, one perpendicular)
which are filled 2" deep with Hydroton.Three inch rock
wool cubes are partially buried in Hydroton, 4 plants
per tray. The DynaBloom nutrient solution (1200 ppm/6.0
pH) is being pumped to each plant site by a Chapin Spray
Tube (N type) on a schedule of 20 minutes ON and 10
minutes OFF. The trays were modified to allow one inch
of flooding.

AN INCH IN EACH TRAY

Above, a
close look at the business end of a tray before the
clones go in, showing the Chapin Spray Tube (Chapin
Watermatics Co.) as well as a plastic cup MrSoul
modified into an overflow to create the water level (he
just cut the bottom out of the cup and notched the side
to the desired level). The nute solution picks up lots
of oxygen from the spraying and also in the cascading
overflow through 2" PVC tubing enroute to a remote
reservoir (in a cool room) where a "bubble wand" located
under the pump adds even more oxygen. Supplying oxygen
to the roots is the KEY to growing!

EACH CLONE GETS ITS OWN SPRAYER

Above is a view of the underside of the canopy
showing the 3" RW cubes half-buried in Hytroton. The
water level in the trays is about an inch deep. The
Chapin sprayers are normally inserted into the cube's
wrapper, but in this pic they're lying on the surface of
the Hydroton. Each clone gets its own sprayer & they
run 24/7. MrSoul tried on/off cycles but found it works
as well or better spraying 24/7.

When growing a
heavier variety like Genius, MrSoul harvests between 1
-1.25 lbs per 1k light.

Last modified: 13:12 - Mar 02,
2001

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