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Date: Mon, 28 Dec 1998 08:17:17 -0500 (EST)
From: ac554 at freenet_carleton.ca (David Whittaker)
Subject: Seasonal changes in Ludwigia x. repens
Lately I've been getting slow/poor growth from a few plants,
especially ludwigia and Alternanthera reineckii. The lower
leaves die and the green algae sets in. Is this the usual
nutrient problems or might it be due to a seasonal slowdown?
Anyone else growing the above who has noticed a change?
I'm also interested to know if those of you who are using
calcium chloride, as opposed to calcium carbonate or
bicarbonate to supply calcium, have run into any problems.
I'm discontinuing its use for now, but I have yet to devise
a good method of dissolving powdered dolomite without
clouding the tank.
ac554 at FreeNet_Carleton.ca
Seasonal variations are not the case IMHO due to the fact I have both
plants L. x repens and A. reineckii and this has never occurred with
these plants in several set ups over many years. Plants that exhibit
these conditions almost always have a nutrient deficiency. Often shows
up in Hygrophila sp. frist. These are good indicator plants.
I suppose your water is very soft if your adding Ca++ ? My levels stay
very stable due to great local water and fequent heavy water changes.
Tom Barr AGA