Description
phosphate rock
8% solution at 1/4 – 1/2 teaspoon per gallon water
including a significant amount of calcium
Blow all dust and particles out of the filter from the inside out with an air compressor
Stays sharper longer
BOTANICARE TRAY ID BLACK 4 FT X 8 FT HGC707047 DOKTOR DOOM phosphate rockThese are the same high quality trays as the industry standard Botanicare White Grow Trays, but are now also available in black. They feature the same thickness and design as their white trays.