HELP PLZ!!TEN POINTS how much gravel do i necessitate for a 20 gal reservoir and are nearby any gravel substitutes?

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you need to swarm it half way up with gravel
hope this help

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convert 20 gallons to pounds(or wtv)
i don't think there are gravel subs.

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It's merely for decoration, get sand

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Two bags would be good. (3$ bags at petco)
Sand is a substitute

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Answers:    Around 20 pounds should be fine. 25 -30 if you want it to be a little deeper. Sand or pebbles can be used as substrate as well, and both enjoy their advantages and disadvantages.

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