I use ebb and flow so i have no lines to clog. But i think that the clogging lines you are having problems with is from nutrient salts. You probably knew that though.
I have heard of people using filter bags, they are a bag you put your pump into that works as a prefilter, this might be something you want to look into if it isn't nutrient salts that are your problems. I have heard of people using tights thar are thicker than average nylons for prefilter bags. Sapposedly it extends your pumps life too.
This is my first grow that i have done, so I really don't have a bench mark to go from but I do know that carbs make more dense buds.... All of the hydro solutions that are carb solutions are derived from molasses or cane sugar. I have notices my buds growing in more densely but I am not sure if this is the typical life cycle or from the molasses.