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There are species in the root pack that will also deter algae growth on rockwool when the root pack is added to your recirculating reservoir at the rate of 1/3 tsp per gallon
and come in sizes to accommodate most pots
kurstaki or Btk
Beam angle: 120°
Grodan Gro-Smart Tray Terracotta Root Innoculant There are species in theGrodan Gro Smart Tray Terracotta 78 Cell Your Grodan Starter plugs, Mini BlocksTM and Gro BlocksTM have finally found a home. This durable Dutch tray has double sided features. Use the 78 cell side to perfectly fit 1. 5" A OK StarterTM plugs or round MacroplugsTM. Use the mesh side for sheets of A OK's, Mini Blocks, or Gro Blocks. The tray fits in a standard 10" x 20" flat and keeps the Grodan elevated from the bottom of the flat. Easily sanitize as