What would be the most efficient way to set up to attract the last four pondweed combos.  Not sure where to start. I have yet to attract the turtle, dolphin, puffer and lochness. Some share the same weeds so looking for efficiency in resources. Thanks in advance.

This is something someone posted years ago.  It's a way to do all of them at once, but perhaps it will still help you?

To do all Pondweed Combos with one set of weeds:
   
Get ALL your u/w myths to within 1 or 2 of planting the pond weed,
then plant as follows: violet, indigo, blue, green, yellow and orange.
   
Plant a new toadstool and then a supershroom.
   
   1. Dust for goldfish - orange and yellow
   2. Dust for angel fish and squid- blue and indigo
   3. Dust the violet for the dolphin.
   4. Dust the green for Nessie.
   5. Pull the indigo and plant red for the turtle.
   6. Pull the orange for the puffer.

The Pondweed lasts (undusted) 4 days from planted  - 1 day to FG, and then 3 days from FG  to RFH

This is amazing, thank you. So I need to plant all weeds first then dust in order below?

Yes.

Thanks so much, Rachel.