RFI Limp water - The Planted Tank Forum
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Old 06-02-2003, 12:39 PM Thread Starter
Algae Grower

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Join Date: Mar 2003
Location: Long Island, NY
Posts: 72
Here on Long Island the water is so soft, it's limp.

I have tried to glean info from prior posts, but have gotten a bit confused.
If someone can help the mathematically impaired....

Assumptions:

55 gal - 2.9w/g 5000K 90cri
gH, kK, dH = 0
using NaHCO2 for kH [ currently raised to 3 kH for buffering of HP CO2]
CO2 40 bpm
using MgSo4 and CaCl [ found at the 4th a pool supply \$10/7lbs. Sun chem co.]

Q1: what amout of Mg and Ca each would be added to a solution, such that each mL would elevate the gH 1 degree. [ that way I can figure out my own dilutions.

tried Chucks's calculator, but Ca not supported yet.

other dosages per 55gal

0.25 tsp KNO3 =&gt; 4.12ppm NO3
&gt; 2.6 ppm K
1.25 tsp KCl &gt; 18.88 ppm K =&gt; 21.48 ppm K
2.00 tsp MgSO4 =&gt; 5.14 ppm Mg
???? tsp CaCl =&gt; ???? ppm Ca

Q2: amounts of NaHCO2 to raise kH, so that I can do better than the add and measure technique?

Thanks

POO

125 gal; walmart-K/L covered in PlaySand;
Rena Filstar XP3
6x85watt HO flu. 4.08 Watts/gallon
3x 6500K + 3x 5000k 8hrs/day
HP CO2 ~50 bub/min into Rena canister
My Tap H2O = 0% NO3; 2 Gh; 6.8 pH; 0.3 ppm Fe
PlantumOfTheOpera is offline

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