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Unread 01/11/2020, 10:25 AM   #1
dubmaneh
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Calculating Net Volume

I need to figure out my net volume for dosing of medications. I had this nailed down but changes to the system/coral growth have changed those numbers.

Thinking its between 70-75gallons but want to be sure.

What is the easiest way to figure out the net volume my system without irritating the inhabitants?

Thanks,


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Unread 01/11/2020, 02:39 PM   #2
hkgar
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This should help. Do you dose two part by chance? There is a way to calculate volume by amount dosed.


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180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx

Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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Unread 01/11/2020, 04:02 PM   #3
dubmaneh
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Thanks but I have no idea of the weight of my rocks or sand. I do dose 2 part. I suppose I could use the calculator and see how much a given dose raises the alk.


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Unread 01/11/2020, 06:13 PM   #4
bertoni
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That's what I did, in the end. Just try some doses and back-calculate to the volume. I'd be cautious about assuming any high degree of precision, though.


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Unread 01/12/2020, 04:12 PM   #5
hkgar
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When calculating volume based on amount dosed, I would recommend doing the calculations based on the dose of Magnesium. I use 3.5 dKh of alkalinity /day and the amount of time between dose and measurement needs to be taken into consideration, plus I have no idea how long an even distribution of the dose throughout the tank may take.

I have a 180 DT and 30 sump (gallons) and calculating based on dose gave me a net volume of 127 gallons.


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Gary


180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx

Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels
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