Tetra's Helena Crypto (fwd)

---------- Forwarded message ----------
Date: Tue, 10 Dec 1996 10:43:27 -0500
From: NKLujan at aol_com
To: Aquatic-Plants-Owner at actwin_com
Subject: Tetra's Helina Crypto

  Does anyone know how closely Tetra's Helina Crypto soil additive resembles
laterite?  Also, it would seem to me that the circulation created be
undergravel heating would be contrary to the desire to maintain anoxic
conditions around the plant roots.  Any comments?