Slide to see how monthly cost changes with different AFR dosing levels
Current Daily AFR
โ
ml/day
0 ml/dayโ300 ml/day
โ
Current Monthly
All dosing combined
โ
Projected Monthly
With new AFR rate
โ
Difference
๐ Cost Breakdown
๐ฐ Monthly Cost Breakdown
๐ All Dosing Costs โ Feb 2026 Projection
Based on 7-day Average
Kalkwasser
โ
per month
All4Reef
โ
per month
Strontium
โ
per month
Vodka (Carbon)
โ
per month
Total Monthly Dosing Cost
โ
Daily Average
โ
๐ก Based on current 7-day dosing averages. Excludes Captiv8 trace elements (see ICP & Traces tab).
๐งช Captiv8 Isol8 Dosing
Master Dosing Solution (MDS)
Precision trace element supplementation based on ICP-OES results from Chris Wood's Captiv8 Calculator
โ ๏ธ Important Notes
โข Si (Silicon) must be dosed separately (260.8 mL exceeds 10% of MDS volume)
โข Ca & Sr are in a separate calcium/strontium MDS
908.5
System Volume
liters
45
Dosing Period
days
1.0
MDS Volume
liter
23
Daily Dose
mL/day
๐ฐ Monthly Cost Breakdown
Known Pricing Only
๐ก Cost Insight
โ
๐ Top Cost Drivers
๐ฆ Bottle Longevity
๐ ICP History (Sep 2024 โ Jan 2026)
๐งช Protocol: Chris Wood / Captiv8
Active Since Mar 2025
Chris Wood โ Marine Biogeochemist, CSO Captiv8 Aquaculture Approach: Custom Master Dosing Solution per ICP results. Targets based on natural seawater ratios ("Purple Tables"). Started: March 2025 โข ICP Frequency: ~60 days
โ ๏ธ Volume Error (Mar 2025 โ Jan 25, 2026)
~4ร Underdosing
The Issue: Calculator had tank at 63 gal instead of 250 gal for ~10 months. Received ~25% of required dose. Impact: Deficient elements barely moved, some crashed through range. Corrected: Jan 25, 2026 to 908L (240 gal)