<p>Dr Tim and Hilary go through the mailbox and answer questions on media, dosing One & Only, cycling tanks with fish, should you consider a UV sterilizer, how to position media blocks and more!  Plus wonder how to cycle with live rock and live sand - they answer that too!.</p>

Dr Tim and Hilary go through the mailbox and answer questions on media, dosing One & Only, cycling tanks with fish, should you consider a UV sterilizer, how to position media blocks and more! Plus wonder how to cycle with live rock and live sand - they answer that too!.

<p>Dr Tim and Hilary go through the mailbox and answer questions on media, dosing One &amp; Only, cycling tanks with fish, should you consider a UV sterilizer, how to position media blocks and more! &nbsp;Plus wonder how to cycle with live rock and live sand - they answer that too!.</p>

DrTim's Mailbox - answering more of your questions

Dr Tim discusses all things related to tropical, saltwater and reef aquariums. Aquarium biology and chemistry easily explained.

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DrTim's Mailbox - answering more of your questions

DrTim's Mailbox - answering more of your questions

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