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  • How does the iAVs irrigation regime work?

    Posted by Admin on 29 April 2024 at 9:04 am

    One of the core goals of the iAVs irrigation regime is to remove not less than 25% of the fish tank volume during each 15 – 20 minute pumping cycle. Assuming correct tank design (sloping/cone-shaped bottom) and pump capacity, all solids will be removed during each pumping cycle and the water will be crystal clear.

    For example:

    • 6:00am (dawn or pre-dawn) – 1st pump cycle of the day starts)
    • 6:30am – drainage completed. Feed fish all they’ll eat in 15 minutes
    • 8:00am – 2nd pump cycle (1/4 of tank volume, each)
    • 10:00am – 3rd pump cycle
    • 12:00pm – 4th pump cycle
    • 1:00pm – Feed fish all they’ll eat in 15 minutes
    • 2:00pm – 5th pump cycle
    • 4:00pm – 6th pump cycle
    • 6:00pm – 7th pump cycle
    • 8:00pm – 8th pump cycle (dusk or slightly after, depending on season and location).

    Note: Pump remains OFF overnight.

    If you provide these 8 pump cycles of 1/4 tank volume each per day, then you’ll have 2 complete tank exchanges daily and a full tank volume filtration following every feeding. If you do this then solids will NOT accumulate nor reduce dissolved oxygen levels nor stimulate alga growth or disease organisms. The ENTIRE point of filtration (e.g. sand) is the removal of the fish ‘waste from the water column. The first goal is to extract the ‘wastes’, then let the sand filter out ALL of the suspended solids (including the fraction too small to see).

    Additional information can be found in sections 15.2 and 21 of ‘An Introduction to iAVs’

    Admin replied 3 weeks, 2 days ago 1 Member · 0 Replies
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How does the iAVs irrigation regime work?