Anodizing looks so difficult now because its new to you; don't worry, you will get the hang of it, and it will become easy and predictable.
Keep in mind that LCD was developed (by me) to minimize equipment costs and maximize safety. It was intended for hobby use, it by necessity (to keep it safe and cheap) is too slow for most commercial applications. That said, its an excellent way to learn anodizing. When you understand the anodizing process you will be able to see how you can modify it for commercial application. This approach will get you up to speed quicker and cheaper than starting with standard anodizing and struggling with it.
You can get a battery powered digital thermometer with a remote temperature probe for about $20. It will be much more convenient to use as well as being far more accurate.
I suggest that you carefully read the sticky at the top of the page, A question about the Old Method I think this will answer your electrolyte vs. current density questions.
If you use LCD current densities (3-6 A/sq.ft.) with substantially stronger electrolyte you are favoring dissolution at the expense of coating growth. This could cause dye retention problems all by itself. You can use LCD electrolyte at higher current densities without too much trouble, but not the reverse.
The range of bulk coating resistances observed depends on electrolyte conductance. This means that stronger electrolytes conduct electricity better than weaker ones. 2.5 A/sq.ft. corresponds to LCD electrolyte, standard electrolyte concentration will be about half of that. Better conduction is not necessarily a good thing, again, read the sticky. A downside to stronger electrolyte is that its more noxious and more corrosive (read the sticky).
Measuring the electrolyte concentration will be more chemistry than you will need or want to mess with. Hydrometers don't work well after you get some aluminum dissolved in the electrolyte. Keep a notebook and write this stuff down as you do it, it will save you lots of time in the long run.
Did I mention to read the sticky?
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