The custom micro mix thread has reached nearly 100 pages and nearly 1,500 posts. Additionally, the old threads on trace toxicity are long and full of chaff. Now, I try not to be lazy and generally am willing to put some time into researching a topic, but this is a bit much. I realized I'm...

I'm planning on fertilizing my tank according to EI, but I can't do weekly water changes; I'm shooting for bi-weekly. As you probably know, the driving factor behind EI water changes is the maximum allowable concentration of each nutrient. Interestingly, I've been unable to find much discussion...