Ok … I am going to break one of my rules … I rarely make specific recommendations, I normally am the tireless nag who nags you to educate yourself about plant nutrition, educate yourself about the various dosing strategies, and then force you to make your own decisions <grin> … because when most people ask “what do I need” they usually want to be told what to do rather than gain the knowledge and understanding <grin> …
But <grin> … since you didn’t ask <grin> … and I suspect you are really 90% of the way there already … let’s talk …
Plants need to be fed a well balanced diet of Light, Carbon, Macro Nutrients, and Micro Nutrients …
You already have the turbo charged Ferrari style lighting … and you already have the pressurized CO2 … so you are already 90% of the way there …
All you need are macro nutrients (Potassium, Nitrate, and Phosphate) and Micro Nutrients (Like the Flourish you are using or a do-it-yourself alternative) …
So … for you macro nutrients you need one pound each of Potassium Nitrate and Mono Potassium Phosphate. Some old guard people like myself might also dose Potassium Sulfate, but your probably do not need it because you probably will be getting all of the Potassium that you need from the Potassium Nitrate and the Mono Potassium Phosphate … now that said, Potassium Sulfate is cheap, so personally, I continue to dose it (an excess amount of Potassium causes no harm), but I can also tell you that it is not needed in most cases …
Now … for Micro Nutrients … you are currently dosing Flourish … it is in my opinion, the best micro nutrient solution available. So either continue to use Flourish (which is the best) or you can consider a do-it-yourself alternative like many of us use made from Plantex CSM+B and Magnesium Sulfate. You can read about how to make your own micro nutrient solution here:
http://www.GregWatson.com/HowToDosePlantex.htm ...
That should be all that you need …
So unless you have really soft water, you do not need anything else …
Chuck Gadd has a great online dosing calculator
http://www.csd.net/~cgadd/aqua/art_plant_dosage_calc.htm that you can use to calculate how much of each of the macro nutrients you need to dose … somewhere on Chuck’s site he also has a downloadable windows version of his calculator as well …
Most of us start off doing water tests and then using a dosing calculator like Chuck’s to figure out how much we need to add each time. I personally dose Macro Nutrients on Monday, Wednesday, and Fridays. I dose Micro Nutrients on Tuesday, Thursday, and once on the weekends after I do any water changes or aquarium maintenance.
Eventually, most of us get to the point where we test our water less and less frequently and end up essentially following the Estimative Index dosing strategy whether we call it that or not <grin> …
It looks like you have a beautiful tank … I wish you the best of luck … if you ever get stuck or if you get an answer in one of the forums that you don’t understand, please feel free to drop me a note anytime with a link to that thread … I am usually pretty good at translating technospeak into the English that you and I speak <grin> …
Thanks,
Greg
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Wow………not the email I would have expected
Hi Greg,
U got me pegged……I am new to the planted aquarium and wanted to have all that I need for the 92G I am cycling.
I frequent a forum and the users there told me that you were the man…….so I went to your site and made sure I had all the bases covered.
I am more than happy to go on your recommendations.
I am currently using flourish liquid ferts for my 29G …..but I’m still only a couple weeks into this.
I love it so much I decided to go all out.
If you would like more background on the 92G, you can check out my thread at aquariumadvice.com
http://www.aquariumadvice.com/viewtopic.php?t=75403
My username there is GlitcH
So……the balls in your court……..lemme know what I need.
Thanks again for your help.
Brian