Comparison
Red Sea Coral Pro vs Tropic Marin Pro Reef
Side-by-side spec comparison of Red Sea Coral Pro and Tropic Marin Pro Reef salt mixes. Real manufacturer numbers for alkalinity, calcium, magnesium, pH, and mixing ratio — plus when to actually use each.
The contenders
Side A
Red Sea Coral Pro
Premium reef formula
Side B
Tropic Marin Pro Reef
Low-alk reef formula
Spec-by-spec
| Spec | Red Sea Coral Pro | Tropic Marin Pro Reef |
|---|---|---|
Alkalinity (mixed @ 35 ppt) source | 11.5–12.5 dKH | 7–8 dKH |
Calcium source | 450–480 mg/L | 430–450 ppm |
Magnesium source | 1,350–1,430 mg/L | 1,300–1,350 ppm |
Potassium source | 385–415 mg/L | Natural seawater ratio |
Target pH source | 8.2–8.5 | 8.0–8.4 |
Mixing ratio (per US gal) source | ~145 g (5.1 oz) | ~150 g (5.3 oz / 0.5 cup) |
Max mix time source | ≤4 hours (Red Sea spec) | Stable indefinitely |
Cost per gal mixed source | ~$0.49 (2021 BRS data) | ~$0.55–0.65 (variable retailer) |
- Max mix time: Coral Pro precipitates if held too long.
Which one for which situation
SPS-dominant tank, no dosing, weekly water changes
Pick: Red Sea Coral Pro
The high alkalinity and calcium on Coral Pro replenishes faster-consuming SPS tanks without supplements.
Mixed reef with calcium reactor or two-part dosing
Pick: Tropic Marin Pro Reef
Pro Reef's 7–8 dKH target won't fight your dosing. Topping a reactor-driven tank with high-alk salt causes drift.
Fish-only-with-live-rock (FOWLR)
Pick: Either works
Neither salt is wasted on FOWLR. Pick on price and availability.
Frag tank or coral grow-out
Pick: Red Sea Coral Pro
Coral Pro at 11.5–12.5 dKH directly drives skeletal deposition. Confirmed by Red Sea's own SPS guidance.
ULNS / SPS at low-nutrient parameters
Pick: Tropic Marin Pro Reef
Pro Reef pairs cleanly with controlled dosing regimes (e.g., Triton Method) where you want predictable, low baseline alk.
Where to buy
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Related calculators & references
Sources & references
- 01Red Sea — Coral Pro Salt manual (PDF)https://redseafish.com/wp-content/uploads/2013/12/Coral-Pro-Salt__Multilanguage-Manual_GB_FR_DE_IT_ES_PT_JP_CH_v17a.pdf
- 02Red Sea — Coral Pro product pagehttps://g1.redseafish.com/red-sea-salts/coral-pro-salt/
- 03Tropic Marin USA — Pro Reef FAQhttp://www.tropicmarin-usa.com/faqs.html
- 04Tropic Marin — Pro Reef product infohttps://www.tropic-marin-smartinfo.com/pro-reef?lang=en
- 05Bulk Reef Supply — Coral Pro spotlighthttps://www.bulkreefsupply.com/content/post/brstv-product-spotlight-red-sea-coral-pro-salt-mix
Last reviewed