mypoolisgreen

Hi guys, I'm new here, I registered because I'm having problem with my pool. First off, It's an interior inground pool. Everything was going fine until the piping of my heaters broke, Wich made it stop working. After We repaired everything, We noticed the pH was kinda high, So after some test my local Pool store recommended this : http://www.clubpiscine.ca/2138-produit-entretien-ecologiques-pour-piscines-et-spas-eco-alk.html It's called Eco Alk (sorry description in french), It's basiclly just some stuff to regulate the pH. Before adding this the water was crystal clear, But when we added it, the water turned green instantly. So I went back to the local Shop, They told me the pH was alright, But he didnt know why the water was green, So he told me to use a algae killer. He sold me this stuff called Poly 40 from the same manufacturer.. Anyway, after trying to threat it with chlorine and the solution for algae, the water is still Green in apparence. But If I take it in a bottle, The water seems to be translucid. Any Ideas what it could be ? And what products I should look into? I'm tired going off with the advice the guy from the shop is giving me, he seems like he doesn't know what he's doing. Thanks guys