at level 51 i got between 30 - 60 experience for each dropped star. You earn more experience during the time.

Buy the cheapest fish to fill your aquarium, because expensive fishes don't give you more experience.

Just make sure you don't sell your fishes after removing the decoration. You lose your trophys, but you can keep all the 12 fishes. After unlocking the perfect aquarium achievement you can sell your decorations and get 10% of you invested money back. The stages give you money to decorate your tanks. 200 completed stages and 5 perfect aquariums - Your next 2 big goals on your road to 1 million coins. If you going to lose a stage, just reactivate the relax mode DURING the match before the time runs out. My suggestion: Only finish the first 50 levels without timer, because you earn extra coins if you complete a stage with a gold/silver time. My Stats after 1 million coins - Time: 26 hours | Level: 51 | Stages completed: 392 If you read my solution and don't do the 'mistakes' i did, you can unlock this grindy achievement faster than me! - Relax Mode and 100 gold medals - As you probably know, you can activate the relax mode and deactivate the timer to earn a gold medal after each stage.

Amazing aquarium Fishdom