Modern Reef Reef-Keeping System (RKS) 4-Part Complete

All-in-one reef keeping made simple. This 4-part system delivers essential trace elements found in natural seawater, organic and inorganic micronutrients, and amino acids in one convenient set—everything needed to maintain a thriving, colorful modern reef aquarium. Built on a unique proportional consumption formula used by Akil from Euro Corals, it balances KH (carbonate hardness) and Ca (calcium) so corals grow faster, color up, and stay stable with minimal testing.

• Enhances challenging yellow and orange pigments, plus vivid reds, pinks, blues, and purples—especially in Acropora polyps and bodies
• Stimulates non-fluorescent chromoproteins and optimizes fluorescent/reflective pigments under blue-spectrum lighting
• Improves water clarity by supporting sponges and sea squirts
• No constant magnesium or calcium testing—focus on KH
• Free of Nitrates (no3) and Phosphates (po4)
• Adapts to any reef setup and nutrient export method via proportional dosing

Concentration:
10ml × 100 liters will raise 1 dKH

Preparation & Dosing:
Ready-to-use, 4 equal parts liquid. Dose by hand or, ideally, with a calibrated 4-head dosing pump (SPS-dominant systems especially benefit). If using 3 heads, combine equal parts of KH1 and KH2 in one container and multiply that combined dose by 2. Keep tubing lengths equal, calibrate pumps every 6 months, dose equal parts with 10–15 minutes between heads (KH1 → CAL → KH2 → MAG), and spread daily dosing into multiple events.

Dosage: Dose equal parts to keep KH between 7.2–8.5 dKH; calcium will track proportionally. For the first 2 weeks, dose equal parts to keep calcium stable at 380–420 ppm, then fine-tune to find your ideal KH. Example: if calcium trends down at KH 7.5, slightly raise dosing to hold ~7.7 and recheck; if calcium trends up

at KH 8, slightly lower dosing to hold ~7.8. No shaking or magnetic stirrer required.

Refill-Friendly Preparation (for canister make-up):

• Use a clean 5-liter canister with a clear 5-liter mark
• Warm osmosis water (35–40°C) speeds dissolving for KH1-R and KH2-R; rinse bottles 2–3 times
• For CAL-R1 & CAL-R2, add both to the same canister and fill to the 5-liter mark
• For MAG-R, fill to the 5-liter mark with osmosis water
• Mix 30 seconds; let sit 1 hour before use

Precaution:
Avoid additional amino acids or mixed trace products—everything is already included by proportional consumption (except solid food). Store in the dark, away from direct light. Refrigeration is not required; keep in a cool place.

4 x 5L Preparation Mix Instructions

Directions

BASE KH1-R:

• Shake vigorously and empty all the content of BASE KH1-R in a 5-liter clean and empty canister with a 5-liter guide mark. The 5-liter guide mark is important!
• Fill 25% of the BASE KH1-R bottle with warm osmosis water, close the cap and shake vigorously, then empty it into the 5-liter canister. Repeat 2-3 times till no salt is left in the BASE KH1-R bottle.
• Heat sufficient osmosis water using a microwave to fill the canister precisely till the 5-liter mark. The ideal temperature for the total preparation should be between 35-40°C for easy dissolving.
• Close the canister and mix for 30 seconds. Repeat if it’s needed till it’s completely dissolved.
• Let it sit to cool for 1 hour, and you can start using it.

Directions BASE KH2-R:

• Shake vigorously and empty all the content of BASE KH2-R in a 5-liter clean and empty canister with a 5-liter guide mark. The 5-liter guide mark is important!
• Fill 25% of the BASE KH2-R bottle with warm osmosis water, close the cap and shake vigorously, then empty it into the 5-liter canister. Repeat 2-3 times till no salt is left in the BASE KH2-R bottle.
• Heat sufficient osmosis water using a microwave to fill the canister precisely till the 5-liter mark. The ideal temperature for the total preparation should be between 35-40°C for easy dissolving.
• Close the canister and mix for 30 seconds. Repeat if it’s needed till it’s completely dissolved.
• Let it sit to cool for 1 hour, and you can start using it.

Directions BASE CAL-R1 & BASE CAL-R2:

• Shake vigorously and empty all the content of BASE CAL-R1 & BASE CAL-R2 in the same 5-liter clean and empty canister with a 5-liter guide mark. The 5-liter guide mark is important!
• Fill 25% of the BASE CAL-R1 & BASE CAL-R2 bottles with osmosis water, close the caps and shake vigorously, then empty them into the 5-liter canister.
• Add osmosis water to fill the canister precisely till the 5-liter mark.
• Close the canister and mix for 30 seconds. Repeat if it’s needed till it’s completely dissolved.
• Let it sit for 1 hour, and you can start using it.

Directions BASE MAG-R:

• Shake vigorously and empty all the content of BASE MAG-R in a 5-liter clean and empty canister with a 5-liter guide mark. The 5-liter guide mark is important!
• Fill 25% of the BASE MAG-R bottle with osmosis water, close the cap and shake vigorously, then empty it into the 5-liter canister.
• Add osmosis water to fill the canister precisely till the 5-liter mark.
• Close the canister and mix for 30 seconds. Repeat if it’s needed till it’s completely dissolved.
• Let it sit for 1 hour, and you can start using it.