I have RCS and tiger shrimp in a 29 gal community tank. I started with about 30 so I didn't worry about their impact on bioload. But now they've bred to 300+ (just a guess). Is there a number where I would need to consider the shrimp and is their an equivalent like 50 shrimp = 1 fish? I'd like to add some more fish but I'm not sure If I should.