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 Showing results 1 to 17 of 17 Search took 0.08 seconds. Search: Keyword(s): ; Posts Made By: Jacan
 08-02-2005, 04:47 PM Replies: 2 Views: 571 Posted By Jacan http://www.bestfish.com/tips/091798.html You... http://www.bestfish.com/tips/091798.html You are not the the only one with high readings when yousing amquel and AP.
 07-19-2005, 03:19 PM Replies: 5 Views: 736 Posted By Jacan http://www.ca.uky.edu/wkrec/InteractionspHEtc.PDF... http://www.ca.uky.edu/wkrec/InteractionspHEtc.PDF Maybe the link can give you an answer to your question! The pH-KH-CO2 chart is for a constant 25C (78F), so it do lies at 15C or lower.
 04-14-2005, 09:51 PM Replies: 18 Views: 1,252 Posted By Jacan Free ammonia is NH3 so NH4+ is bound ammonia. the... Free ammonia is NH3 so NH4+ is bound ammonia. the ratio NH3:NH4+ depends upon the pH and temperature, and of the two ammonia form NH3 is considerably more toxic to fish than NH4+, so if pH<7 the...
 04-03-2005, 03:14 PM Replies: 1 Views: 786 Posted By Jacan Ca++ has a valency of 2 so 1ºdH = 0,358mEq/L Ca++... Ca++ has a valency of 2 so 1ºdH = 0,358mEq/L Ca++ The calculations are correct
 01-08-2005, 07:26 PM Replies: 9 Views: 2,103 Posted By Jacan Calciumcarbonate CaCO3 disolve in water with CO2... Calciumcarbonate CaCO3 disolve in water with CO2 and H2O CaCO3+H2O+CO2 <=> Ca2(HCO3) 1 teaspoon of calciumcarbonate = 2-3 g, and 1 dH = 1mg CaCO3/L, so 3 - 4 teaspoon is way to much for a few...
 11-15-2004, 04:25 PM Replies: 6 Views: 656 Posted By Jacan Is it 3 or 3,6 or … ? pH = pKA – log( [A] /... Is it 3 or 3,6 or … ? pH = pKA – log( [A] / [B] ) pH = pKA – (log[A] – log[B]) pH = pKA – log[A] + log[B] log[A] = pKA – pH + log[B] [A] = 10^(pKA – pH + log[B]) A = M(A) · 10^(pKA – pH +...
 10-16-2004, 09:12 AM Replies: 11 Views: 894 Posted By Jacan The density of KNO3 = 1,145 g/ml and one tsp =... The density of KNO3 = 1,145 g/ml and one tsp = 5ml, so you will get 5,725g/tsp. It is a good idea to buy a set of spoons used for baking! I dont know how much a tsp. is in (gallons) but 5ml is...
 10-11-2004, 10:35 PM Replies: 4 Views: 2,530 Posted By Jacan Hi Rolo I read you thread ”The PH-KH-CO2... Hi Rolo I read you thread ”The PH-KH-CO2 equation completely wrong?” Yes and no!! I agree with the equation if you switch pH and pKa pH = pKa + log([HCO3–] / [CO2]) 10^(pH-pKa) = ([HCO3–] /...
 10-03-2004, 12:51 PM Replies: 8 Views: 668 Posted By Jacan 1 teaspoon NaHCO3 (3,5gram) per 10 gallons will... 1 teaspoon NaHCO3 (3,5gram) per 10 gallons will increase KH with 3,5g NaHCO3/10gallons = 92mg NaHCO3/L = 67mg HCO3– /L = 3,1ºdH To make a permanent KH with crushed corals CaCO3, a...
 08-21-2004, 11:44 PM Replies: 19 Views: 4,499 Posted By Jacan http://www.natlex.dk/syrekonst.html ... http://www.natlex.dk/syrekonst.html http://www.natlex.dk/koncentration.html Beregning af molarmasse & koncentration Hey Rolo This is the danish site I was referring to. The first is a...
 08-21-2004, 07:16 AM Replies: 19 Views: 4,499 Posted By Jacan I have a hard time to find the definition of 10mg... I have a hard time to find the definition of 10mg CaO/L = 1ºdH and 1mg CaCO3/L = 1 ppm, but I got it from some german sites (not aqaurium sites :proud: ). The rest I Figure out from a danish chemist...
 08-20-2004, 08:41 PM Replies: 19 Views: 4,499 Posted By Jacan I hope this can be at any help M(CaCO3) =... I hope this can be at any help M(CaCO3) = 100,09g/mol M(CaO) = 56,08g/mol M(Ca) = 40,08g/mol M(Mg) = 24,31g/mol M(HCO3) = 61,02g/mol 10mg CaO/L = 1ºdH (deutsche härtegrader) 10mg/L x...
 07-27-2004, 10:42 PM Replies: 18 Views: 1,935 Posted By Jacan The problems about measuring chelated Fe in the... The problems about measuring chelated Fe in the tank, could simply be that it is the same chelate (EDTA) there is used to determine the concentration of Fe. So the Fe is already chelated and there...
 04-09-2004, 08:14 AM Replies: 9 Views: 575 Posted By Jacan I would say that they both are males, and the... I would say that they both are males, and the rest of them in your LFS are probably males too. The reason is that WF Ancistrus often are males because they are catch by lifting up woods and it will...
 04-06-2004, 09:26 AM Replies: 10 Views: 1,215 Posted By Jacan Calciumcarbonate CaCO3 disolves in acid water so... Calciumcarbonate CaCO3 disolves in acid water so boiling it will not help much CaCO3(s) + H2O(l) + CO2(g) -> Ca2+(aq) + 2HCO3-(aq) So to raise both GH and KH you need CO2 with rour...
 04-05-2004, 12:04 AM Replies: 17 Views: 5,945 Posted By Jacan Your test kit must be measuring CaO because that... Your test kit must be measuring CaO because that will give the calculation from Water Hardness 150 to (8.4 DH). The test kit must be pretty old because CaO is actually water hardness as it was...
 Forum: Lighting   04-28-2003, 03:26 PM Replies: 16 Views: 2,151 Posted By Jacan The price is way too high for T5, the problem... The price is way too high for T5, the problem with T5 is that its not commonly known, but T5 is produce by Philips, Osram, and many more known companies in Europe. Try and check out Philips ...
 Showing results 1 to 17 of 17

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