hey guys,
I just scraped out the silicone from a $3 scraper from lowes (I tried scraping with a blade, but the pro one worked wonders)
2nd, I regouped it with 100% silicone ($3.98) and spread it with a spreading stick from lowes (again $3)
I let it set dry for 4 days, and now it stands great full of water - it's been 4 days without any leak or complications.

Thanks everyone for advice