They might, and they might not. Without enough water changes, they won't, but you'll be dealing with hole-in-the-head disease, misshapen bodies with still-growing organs, and a host of other problems that stunting causes.
Starting over might be a good call.
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current setup:
15 gallon, planted w/ pressurized co2, 55watts PC lighting, EI fert dosing.
-5 harlequin rasboras
-7 Aspidoras pauciradiatus (sixray or false corydoras)
for reference: my name is Julie 
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