So if I have read this correctly. Most of us out there pry should not use aqueon liquid plant food?
Not just Aqueon, but unless your tank pH is 6.3 or lower any feEDTA is worthless.
Seachem products are good for tanks with 7.5 pH or lower
For those with 7.6 or higher, you will have to make your own using FeEDDHA, or you are wasting your money because very little iron will be available, if at all, in the other forms.
The article explains it all. Good stuff!
Bump: Cherry Red Water? Well, I'm good with my Un-Planted Tanks. I just fertilize outside of my aquariums.
Found this, and thought it might be important to know:
Fe-EDDHA is the ultimate option, (if you don't care about the redness) but if you aren't running a pH above 7.5 (and you shouldn't be if you want the best plant growth) you can go cheaper with Fe-DTPA. Dr Rakocy uses Fe-DTPA according to the last paper I read from him.
I lifted this from Sylvia's blog:
"Fe-EDDHA, in contrast, is fully effective up to and even above pH 8. The problem is that quality Fe-EDDHA is expensive and it turns your water as red as cherry Kool-Aid.
In contrast Fe-DTPA is fully effective all the way up to a pH of 7.5 and it is just slightly more expensive than Fe-EDTA. This is why Dr. Rakcocy, and other experts recommend Fe-DTPA for aquaponics. And this is why we have switched to using Fe-DTPA in our AquaIron products."
Here's the post from Sylvia about the different forms of iron you can get and what pH ranges they are effective at:
Here are the Nate videos (he does a very good job):