Time for a long overdue update. Things have been crazy the past couple of weeks as Ive been setting up two new 20 gal tanks. More on that later. The three big tanks are all overgrown and crammed full of too many species, very little scaping going on in the 120. But that is about to change!
The one constant these past few weeks has been a daily dosing of micros at the following ppms:
Fe DTPA - .2 ppm
Mn - .09 ppm
B - .035 ppm
Zn - .065 ppm
Mo - .0025 ppm
Cu - .002 ppm
Ni - .0005 ppm
Up until two weeks ago N was 5 ppm KNO3 3x per week, and daily urea at .3 ppm. I started noticing some pale tops in a few plants. Well it certainly wasnt a shortage of Fe, and the next likely suspect was nitrogen. So I added an additional 2.5 ppm KNO3 and with just a couple of doses the pale plants colored up again and everything in general seemed to really take off.
Gotta say Ive never been real impressed with urea, so Im ditching it completely and starting KNO3 at 10 ppm 3x per week.
Posted this in the micro thread on TPT but it's relevant to dosing 10 ppm
Looking back to around a year and a half ago, the 50 gal went a few months at 10/2/10 NO3/P/K. Vin and I were trying to see whether high macros stunted Lythracae, specifically Rotala sunset.
It was during this time I had some of the best sunset growth Ive ever seen, and havent been able to duplicate it since.
Thats the main reason I feel confident going back to 10 ppm KNO3. No urea back then either. Fwiw micros at the time were .0187 ppm of each; csmb, dtpa, and gluc, 3x per week
Here's some current pics how things are doing
Rotala macranda variegated, Limnophila belem, Rotala wallichii in the 50
Wallichii in the 120
Persicaria sao paulo in the 75. When this plant's leaves are flat and horizontal things are pretty damn good.
^ also you can see a few Pantanal tops here. It's not even a challenge these days, grows an inch a day and no longer stunts after a topping. I've moved it all to the 75, just gonna farm a small group for a while, not sure Im gonna use it in the 120
Mermaid weed in the 50
Ludwigia brevipes in one of the new 20s. It's been in a back corner of the 75 for a few months almost completely shaded, that's why its so green. Starting to color up nice after, four days I think