Hello.
Thank you all for your kind replies. I´ll try to answer all your questions.
auch about the PMDD formula: I go to a pharmacy and purchase KNO3 ( Nitrate injection); KH2SO4 ( potassium injection); MgSO4 ( magnesium injection). I don´t fertilize with phosphate because when i feed the fish, there´s always food that sinks and is decomposed.
Than I go to this site:
http://www.csd.net/%7Ecgadd/aqua/art_plant_dosage_calc.htm
and calculate the quantities of the mix and, through water tests, I experiment untill i achieve the right dosage in the tank. For example:
Imagine I have a heavily planted tank and my Nitrates are zero. What I do is:
Go to the calculator on the link above and make the mix in order to, when i inject nitrate, per ml, i´ll have 1 ppm of N in the tank water. Plants consume this 1 ppm in that day and the next day, i dose again 1 ppm of N. You can also add more than 1 ppm per day, meaning that in the end of the week, you´ll have to teste the water for nitrate to see what levels you have. The target levels are from 5ppm-10ppm of N. From this step on, other macro nutrients will be consumed related to the amount of N in the water. You also have to know that N depends on K to be consumed by plants. That´s why the dosage of K is always superior to the dosage of N. The target level of K is 10ppm-20ppm. When K ( potassium) is available at high levels ( between 10ppm-20ppm), N ( nitrate) will always be consumed by plants. Phosphates are important but the target level is far low that other macros because it is consumed in low quantities by plants and an excess of it can cause algae.
In the end, what makes a stable tank is the right proportions between macro nutrients. Unstable ammount of macro nutrients leads to algae growth and sick plants. Healthy plants don´t have algae.
Don´t know if i was clear enough but here goes some links that help to corroborate what i´ve just explained:
http://www.aquaticplantcentral.com/forumapc/showthread.php?t=4241
Eheheh yes i know my translator sucks, i´ll be writting in english from now on. It was just a matter of respect...
lewisleu, 薑雞 titus lee and 李大明 thanks a lot.
I believe ganboy has clarified things too. Thanks Kelvin. BTW Kelvin, some of the links i sent you may be offline or were in my hard disc saved so try this ones above. They´ll do.
Old Gold Fish thank you too for your reception. You are right, no matter what language we speak, aquarium is our way of comunicating.
As for the pH and Kh values, i had no choice because my tap water has this parameters. The plants don´t seem to reject it. They all displayed very bright and healthy colours. Even my anubias nana flowered. I kept this aquarium for 3 months and than dismantled it to return with a new layout, more nature style, already setted up. I´ll post photos from it soon.
Your software must be as bad as mine because i understanded a few words. thanks for the effort though. English it is.
ching4ever can´t tell you if it is the same as mine because i don´t know the exact ingredients of the websites mix. The best thing you do is to have your won PMDD formula or you can go with Perpetual Preservation System as i indicated above. Good luck.
Regards,
André
登入
註冊
問答集
)
水清草靚， 
只能講一句，靚。 
