I too have been looking for a way to do this. It can be done, but it is very slow when using reservoirs. It can be created to be truly automated.
This can be done, but it is a bit slow when crafting. 1st off, the layout of your sorting system must be changed to allow for a dual pipe system. The directional flow crafting pipe that allows for drawing from all the tanks without letting them fight each other. The second pipe would be the return overflow (thanks for the over-draw it does). However, this return pipe would have to filter and not have the tanks fight each other. The other main issue is that reservoirs only have a suction of 24. With 50+ non-core types plus the core 6 elements, the single wrap of a room just will not work. The final issue I found is that when the alchemical construct changes types, it will cause a clogging of the draw pipe system at a random location and instantly causes everything to jam. This is where you need to use a redstone clock connected to a valve. This allows the draw from the alchemical construct to be cut off and allow for the lower pressure drain system to flow back into your sorting system. You will need to adjust it to allow the pressure from the alchemical construct to drop all the way before triggering the redstone pulse to re-open the valve. Personally I used a rednet controller for exact settings, but you can build a redstone clock from vanilla minecraft as well if your mudpack does not have it. Sadly, this process causes the delay.. every time it changes draw types, you have a good amount of delay.
The 2 layouts I have come up with allows for the sorting system (using the buffer with the outbound settings already noted in earlier posts to sit on top of the filter pipes, that are linked to the draw pipe. This also allows for the randomly placed clogged pipe to be drained out. Side note, the layout allows you to pipe in from the top to allow connecting to your alchemical furnace setup and take advantage of the filter. Also, at the end of your filter chain, place a few alchemical centrifuges and feed the output back into the filtering system to make a fully contained system (since the final 6 have a void tank).
The main advantage of the second layout (from the second screenshot) is that the end line pressure is a touch higher allowing for a few seconds faster clock to be used. Plus, with only 15x7, this allows for you to build it all in one chunk (for those like me that like to focus your base into single chunk layouts for chunkloaders). For the second screenshot, I left the reservoirs, buffers, and void tanks off for easier viewing, but my love of balance can be satisfied with the 6 core elemental void tanks sorted into the center area.