Green stains will not come off bottom of pool.

I have a 35,000 gal gunnite pool and upon opening the pool, the water was really green. After a week or so of trying to clear it up, my pump died and also realized that my filter was pushing DE into my pool through the return lines. I decided to replace all of my equipment 2 weeks ago and bought a new 2HP Super Pump, a Hayward DE6020 Pro-Grid 60-Square-Foot Vertical D.E. Filter and a new multiport valve. Once all new equipment was installed, the water cleared up in about a day but I quickly realized I had a 1/4 inch layer of DE powder covering the entire pool floor. I manually vacuumed to waste to remove DE and noticed pool floor was REALLY green. I proceeded over the next few days to brush ( I use a metal brush)the pool everyday to remove the algae but there are now very large areas of green that will not come off (see video) https://www.youtube.com/watch?v=bKtjLb7jQqA

I have shocked the pool numerous times and have also used a Anthony Slyvan Green algecide remover, but it does not remove the green staining.

Has anyone seen or heard of this before and can you recommend how to get rid of the green stains on the pool bottom? I really do not want to have to acid wash ( or drain pool). Thank for your help.

Welcome to The Forum, from a native Garden Stater!

What you need is something we call POP (Pool Owner Patience) :) As long as it's algae, chlorine will eventually kill it. Read some of the algae stickies.

What we need to help you more quickly is some water test numbers, full set, please, and how the numbers were arrived at.