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  1. H

    remineralise Ro water with 0 kh?

    hello, so i use Ro water and i would like to remineralise it with seachem equilibrium but I'm aware that this has no affect on Kh. so my question is can i use reminerailse my ro water with only sachem equilibrium even though the Kh will be 0? i use Ada aquasoil and my co2 is at 30ppm, i also...
  2. Christoffer

    Can Cory live in my water?

    Hi, i just a week ago 7 guppys, and next time I shall have fish, I'm going for some Corydoras paleatus - Pepper Cory, what is my water to Hash ? Water: Kh : 12 GH : 14 Ph 8 Ammonia : 0 Nitrit : 0 Nitrat : 18 Temperature: 26 C Tank: 350 liters. Hardscape: Seiryu Rock Roots Moss CO2: No co2...
  3. jaypeecee

    Why Advise A 1pH Drop?

    Hi Folks, I don't understand why a 1pH drop is advised when setting up a profile for injected CO2. For example, if the water KH is 4dH and the starting pH is 7.3, the CO2 concentration will be approximately 6 ppm. But, after a 1pH drop to 6.3, the CO2 concentration will be a staggering 60 ppm...
  4. Ryouku2015

    Ideal Water Parameters

    Hi I have a 240l tank that I have now converted to a high tech planted tank. Ive decided to use RO water and remineralise as my tap water is terrible (about 60-80ppm nitrate and very hard water) and have been deciding on what parameters to aim for and so far ive settled on a pH of 7, GH of 6...
  5. soham

    What's the latest consensus on the effect of high KH on plant growth?

    Dear members, What I have read in various forums so far is that high GH values isn't a big deal for most plants and they grow just fine. There seem to be a difference in opinion regarding high KH values. My first question is what's considered as a high KH level? Mine is 9 dH. Is it high or...
  6. Solex

    Another PH/KH/Co2 ppm Profile question

    LED lights are on for 9 hours at maximum 40% of their capacity. KH color test (with a Sera drop set), color change at the 7th and sometimes 6th drop, tap water is at the 8th. Water temperature 22.5-23C. These drop tests are not very accurate!! PH (Sera drop test set) 08:00 >7 14-21 ppm (KH7...
  7. John P Coates

    Using the pH, KH, CO2 chart

    Hi Folks, I want to try to gauge the acccuracy of the pH, KH, CO2 chart for determining CO2 concentration in the typical (!) tropical planted aquarium with fish. As I understand it, this chart relies on carbonic acid being the only acid determining the pH of the aquarium water. But there are...
  8. John P Coates

    KH Stability

    Hi Folks, In my tropical planted tank (including fish), I use RO water to which I add Tropic Marin Re-Mineral Tropic salts. I also add sodium bicarbonate to bring the KH and GH to 5°dH and 7°dH, respectively. In as little as 9 days, the KH has increased to 6.5°dH. When KH = 6.5°dH, pH varies...
  9. SalvadorNL

    Should I use RO water

    hello UKAPS, I am a new member an have posted a short introduction in the new members section. In short I am in the process of setting up a hi-tech planted community tank in a Fluval Roma 200.But in the past have always done lo-tech tanks. Now I have a question about the hard water in...