[Panw]

I am a beginner, and I am sure this has been posted before.

My RCS babies just hatched about 10 days ago, and they are still very tiny. What should i do with water changes? I haven't done anything to the tank for at least 3 week beside just adding water. The algae & water look pretty bad

 

[WaterLife]

Just stick with 10-20% water changes (actually removing water and adding, not just topping off evaporation). Just topping off, doesn't remove/keep nitrate and TDS levels from building up.

Do you have a test kit? Test ammonia, nitrite, nitrate if the water looks bad. Test pH, GH, KH, TDS as well if you can (these are important as well).
Are the shrimp still active in the tank? Have a pic showing the bad water?
Algae is good for the shrimp.

As for the growth, just keep the water parameters all healthy for RCS and make sure plenty of food is available (but don't overfeed causing water fouling) so the shrimp get plenty of nutrition to grow. Shrimps diet should largely consist of plant/vegetable/algal proteins.