That's obviously a more mature toadstool than you would want. You can get some much smaller ones and keep them until they've outgrown your 5G (in which case, you'll probably have moved up to a bigger tank anyway!)
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~Drew
10G Nano * 10G Sump * Deltec MCE 600 Skimmer * JBL Viper 150w MH * Zeovit * Vortech MP40W
Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon. ~S. Ertz

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