[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [APD] Microwaving water for water changes a bad thing?

Date: Wed, 23 Feb 2005 13:43:54 -0500
From: "Wise, Nicholas" <Nicholas_Wise at lgeenergy.com>
Subject: RE: [APD] Microwaving water for water changes a bad thing?
To: "aquatic plants digest" <aquatic-plants at actwin_com>

The reason chloroamine is added instead of chlorine is that chlorine is
easily driven out by aeration.  Chloramine is mush more stable.

That is a strictly secondary benefit. It was discovered that chlorine combines with organics in the older water pipes to form carcinogenic trihalomethanes, like chloroform. Chloramine started being phased in to the larger water systems with higher risk about 10 years ago, with the timing dependent on the size of the system and the hazard level.

A few big systems like SF haven't had to do it until the last year or so because their water was so pure and free of organics from agriculture, etc. They get pure snow melt from the Sierras by way of the Hetch Hetchy system. Smaller towns still may be using chlorine, and the cancer threat is real, so carbon filtering water to make it potable (and harmless to fish) may be a very good idea.

Amquel was originally developed because many midwestern towns had enough ammonia from agriculture that was combining with the chlorine and forming chloramine, naturally, that aeration and standing didn't work. The half-life of agitated water containing chloramines can be 5 weeks or more. You can do the math yourself to see how it gradually builds up with even quite small water changes.

Amquel, Prime, Ammo Lock 2, etc. are good solutions for the display aquarium or community tank. The ammonia is available to the plants but doesn't harm the fish.

For the serious breeder, they are a potential disaster. Small baby fish depend (more than many think) on micro-critters we call "Infusoria." The formadehyde-like compounds used to tie up the chloramine is deadly to many living creatures up to the complexity of Daphnia and Hydra. The breeder should be aware that his protection of the adult fish could be starving their babies and slowing growth, stunting them, etc.

He/she should use two carbon filters in series, with a tap between and a valve to assure very slow flow through the filters. Testing between can catch the eventual tendency for "punch through" and let the first cartridge be replaced with the nearly unused second one, while a new one is placed in location #2. Chlorine and chloramine read the same on any cheap pool test kit (or the expensive identical one from the LFS). Test to be sure flow rate is slow enough, for chloramine is not easy to filter and requires somewhat longer contact time than many other contaminants.


Wright Huntley - Rt. 001 Box K36, Bishop CA 93514 - whuntley at verizon_net
                      760 872-3995

...frontier society offered ‘the most civilized type of association’ because it had ‘the absolute minimum of external regulation’ and therefore ‘the maximum of voluntary civility and morality.’
------ Isabel Paterson


Aquatic-Plants mailing list
Aquatic-Plants at actwin_com