The Planted Tank Forum - View Single Post - Ultilmate fertilizer for faster plant growth
View Single Post
post #11 of (permalink) Old 06-12-2012, 07:02 PM Thread Starter
Planted Tank Guru
happi's Avatar
Join Date: Dec 2009
Location: Salt Lake City, UT
Posts: 2,974
Send a message via Yahoo to happi
Originally Posted by Seattle_Aquarist View Post
Hi Happi,

Plants absorb their nitrogen first from nitrates, secondly from ammonicial nitrogen sources, and finally from urea. I know that urea is inexpensive but why use a source of nitrogen that plants cannot uptake efficiently?
you are completely wrong my friend, plant uses NH4 before any other source, in my dosing i could have included NH4 but after testing it out, i only included algae in my tank and plus its risky business. Urea is similar to NH4 but instead it breaks down into NH4 inside the plant and they use it right away. if plant don't use it it turns into nitrate in matter of minutes, good bacteria does this. nitrate can be taken up by plants but at much slower rate, i have included nitrate in my solution just in case if plant do absorb all the urea, you will still have nitrate source to back it up for the plants.
happi is offline  
For the best viewing experience please update your browser to Google Chrome