I am new to the "Planted Tank" community. I have built up what I would consider an okdecent setup almost completely DIY. I couldn't bring myselft to putting in a more plant-friendly substrate, but I plan on doing that in my next tank. I just recenly have jumped into CO2 and fertilization. I bought the PMDD makings from Greg Watson (Great person to work with!!!). Although I am still in the process of slowly raising my Nitrate levels, my plants are pearling about 4 hours into my light cycle.
I do have lots of questions that I am still searching through past posts before asking, but a simple one on the PMDD. I mixed up a batch according to the following article: http://www.thekrib.com/Plants/Fertilizer/pmdd-tim.html
I am sure most will consider this a dumb question or just a silly observation.
After mixing a batch according to the 500ml recipe, my mixture still precipitates out of solution after sitting. Each day when I go to dose my tank, I have to shake the bottle for several (like 5 or 6) minutes before it becomes mostly dissolved. As per the article, I store it in a dark glass bottle in the refrigerator. I know the temperature helps force more of the solids out of the solution.
So... Wouldn't it make more sense to multiply the amount of water added to the solution, or divide the amount of solids added to the water, and then have a more dilluted solution. After all, according to the article, when figuring out the dosing, we are dealing with fractions of ml... For my 75g tank, I am adding approximately 1ml per day (which I know may change after I stabilize things)... But I would think it would be better to further dillute the mixture by adding another liter of water, and then be able to use a 3ml dose. As I would need to adjust my dosages, I think it would be easier to deal with the fractional amount with the larger volumes... And quite simply I think I would have to shake the bottle a whole lot less if there was more water!