Sorry, forgot the fact of your tank, 3 days plus no fish. This is another ball game.
I would suggest you just leave the tank as it is except some weekly 10-15% water change. Fertilizer in minimum or even not necessary. Introduce some low cost hardy fish (not too many). Also introduce some low cost plants such as twisted villas which can tolarate almost any kind of water. Wait for at least 1 month for the tank to settle down. Then start again for the red plants.
Also, 100% no algae is near impossible. Even expert with very high-tech tank cannot achieve the exact equalibrium of the tank. Don't be frustrated to see algae again. Fight with algae is also one of the interesting subject in this hobby.
