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Picked up 9 tiger barbs today for my 20 gallon planted tank. They’ve been great so far even though I’ve only had them a couple of hours, fed them some frozen blood worms and they tore it apart (video included) I feel like the tank still feels a little empty, with weekly water changes would I be able to up the number from 9 to 12-14? I don’t plan on adding any other fish besides maybe 5-10 shrimp for clean up crew.