I REPAINTED MY CEMENT BOTTOM POOL LAST SEASON WITH EPOXY. LOOKED GREAT. I DRAINED IT THIS YEAR AS I ALWAYS DO AND CLEANED WITH MURATIC ACID AS I ALWAYS DO BUT THESE STAINS WILL NOT GO AWAY, THEY ARE STREAKING FROM THE TILES DOWN THE WALLS AND IN A FEW PLACES AROUND THE JET BLOWERS ON THE BOTTOM OF THE POOL. IT IS NOT EVERYWHERE AND WORSE ON ONE SIDE. I NEED HELP. THE POOL IS EMPTY NOW. I WAS HOPING TO TREAT BEFORE I FILLED IT. I AM INCLUDING PICTURES. Have also tried clorox, comet, soft scrubs, etc....