Hello everyone. I'm coming to this forum because I'm not really sure what to do with my freshwater tank. Currently I have a 36 gallon bowfront tank and have had it for almost a year now. I have 1 angelfish and 2 blue ram cichlids. I started fighting brown algae a few months into having the tank and have always just used a cloth or scrubber to just clean it off when I would do a water change and clean the substrate (CaribSea Eco-Complete) with a water siphon. Eventually the algae started getting worse and would occur more frequent and It would cover the leaves of my plants causing them to die. I have considered an algae eater and have had my eyes on the otocinclus (dwarf suckers) algae eaters since I have seen them before in a local pet-smart, but ever since I have been wanting to buy them I haven't been able to find them for months. I had only considered these algae eater since they are small and I didn't know of any small algae eater fish that would be good fit for my tank and would also do a good job cleaning algae from tank walls and plants. In the mean time of waiting to find them I resorted to Api algaefix to try and get rid of the algae, but it seemed like it was working for a while, but now the algae has come back thicker and reddish-dark brown almost like a dark burgundy color and it is like a gunk at the top layer of the substrate that almost seems to stick together. Also any new plants that I put in seem to just die regardless. I have checked the water parameters and everything seems fine. I would really appreciate some help because I have no idea what to do and my tank looks atrocious. Please help and thank you for your time. The pictures attached are what the algae looks like now.