How hard is too hard ? - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 12-15-2005, 01:26 PM Thread Starter
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How hard is too hard ?

I live in a very hard water area (did a test yesterday and it took 20 drops of the Tetra test for gh, which if my maths is right converts to about 400ppm ) e.g, about 20 degrees.

I was thinking about diluting it with half RO water to get it down to 10 degrees. I guess my gut feeling is that this ought to be better for a community tank of fish with varied needs and better for the plants.

I'm planning a 52 gallon planted tank with reasonably bright lighting (2W per gallon) and undergravel heater + fertilized substrate and no additional CO2 to start with. The plants have been selected on the basis that they are not demanding on CO2 or Very bright light (All plants are rating 1 difficulty in Hiscock's plant encyclopedia).

Any thoughts ?
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post #2 of 4 (permalink) Old 12-15-2005, 03:26 PM
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KH is the main ssue, how high is that?
The issue is really only for fish and about 5-6 plant species that seem to prefer softer KH's, GH reabad range for these plants really does not seem to have any bearing unless too low(less than 1-2 degrees).

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Tom Barr

www.BarrReport.com



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post #3 of 4 (permalink) Old 12-15-2005, 03:30 PM Thread Starter
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I'll do a reading when I get home, but I would expect it to be similarly high. What KH should I be aiming at for plants ?
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post #4 of 4 (permalink) Old 12-15-2005, 04:18 PM
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My kh reads out at 22degrees with no problems.
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