Saltwater ****es me off

[canadianbudz604]

Lesson learned. I bought an API tap water filter thinking that it would be good enough for my 30g mixed reef. Man was I wrong. After using it for 3 weeks to make my saltwater and top ups my tank has hair algae growing, bubble algae is coming from everywhere, sps doesn't look so hot, palys are like half open, zoas lost color. I'm ready to just give up. I've had the tank running for 7ish months now and have had great success buying water from culligan. Why I changed it up I don't know. For the people that have success using tapwater and ur tank is clean, I hate you. My bulbs are all newer (3-4months) kz bulbs. Now I've been doing 10% water changes every 4 days, what can I do to help my tank recover? More water changes? I'm running some carbon, any help is appreciated. I want my tank back to normal