I guess it could reduce the amount of waste/ammonia, in some situations, more than desired for cycling. The LR
is going to release a lot of DOC
's as things die. Those nutrients may then settle into the rock, and could be released later causing algae issues, etc. IMO
you should still see a significant enough ammonia spike for proper cycling while using a skimmer. It may also reduce the cycle time along w/ curbing nutrient issues down the road. Running a PO4
reducer when done cycling would be good also. Rowaphos and phosban are two very effective products.