Re: Do you use the Estimative Index
"Looking for maximum serenity here rather than maximum growth.
I don't care if my tank looks like the pretty pictures, I just want green.
So there.
TW"
Sounds good to me!
Many/most folks fall into this group after a few months, years.
Light is the best way to do that.
CO2 is next.
PO4 is 3rd.
There are other issues, plant species type also plays a huge role.
I use slower growing plants, add wood, rock etc.
Don't keep many high light tanks.
Newer folks trying out the high light tanks get a faster view of the deficiencies and thus can go back with less light and slow things down and be able to see the plant's response and take action before there 's a problem.
Anyone can and most do back off so they do not waste so many traces, but if there's an issue, you can always reset the tank.
Many have issues(algae/poor plant growth) and many like to see max growth rates. Many seem to think more light is better and will not remove/replace the light ...having spent a small fortune.
I dose weekly on a lower light tank, I do the water change and dose after and that's it. That's pretty dang easy.
But if I want to avoid water changes, I go non CO2.
That is the best method to achieve that goal.
Contrary to poplular belief, non CO2 tanks can be done to a very high level.
Most boards are very slanted to CO2 enriched routines.
I came from non CO2 methods.
I still use them.
They will be included and compared and contrasted often with CO2 routines.
I want folks to see the mechanisms that drive each of these extremes with the methods...they are more similar than many think
I also want to show folks your tank need not look like donkey or only grow hornwort. I've done a lot of work with non CO2 tanks and can really improve upon methods laided out by past folks Dutch, German and Diana Walstad.
I used tanks with no Fish so I could add only inorganic nutrients and tested these to see what was causing the problem with many species of "difficult plants" for non CO2 methods.
This made it much easier to see the rates of uptake and compare them based on CO2 growth rates and uptake.
I still dose PO4/NO3, Traces, just not as much.
I have added a lot of KNO3/KH2PO4, traces even, I've found similar results as a CO2 enriched tank...........no algae.........
Diana Walstad did not tell you this.
Why? Folks did not try and test these things.
They have fish in there and that makes things more difficult to control and tease apart to see what the heck is really going on.
If you limit certain nutrients down, it effects some plant species much more than others................this occurs in non CO2 tanks also, it's not so much CO2, the light is similar to the lower light CO2 enriched tank, so we can rule that out, what's left? Nutrients........
Which ones?
K+, Ca, Mg, Fe and NO3/PO4.
NO3 and PO4 can come from fish food alone for many plants, but some sure do benefit from additions of KNO3, plants are alright with PO4 limitation in non CO2 tanks, but adding it does seem to help.
Onyx sand and leonardite and a little peat really seems to do the best job. I'm very pleased with the results using that.
I'm not big on POLLS, but seeing where folks are at with the non CO2 is very good info, I'll devote more to this than I'd planned as it's something I like a lot.
Regards,
Tom Barr