Mineral EC Soft Maria Green – Water Conditioner for Osmosis & Soft Water

Mineral EC Soft by Maria Green is the definitive solution for growers who start with very pure water (osmosis) or soft tap water and need to establish a solid mineral base. This additive conditions your water, raising the EC to optimal levels so your plants can absorb the rest of the nutrients without suffering from the typical deficiencies of "empty water."

Why do you need to condition your water?

Are you seeing yellow leaves or weak stems even though you are using top-quality fertilizers? This is a classic headache for growers using Reverse Osmosis (RO) filters or living in areas with very soft water.

Water with an EC below 0.5 mS/cm is practically empty. While it's clean, it lacks the buffer effect. This causes wild pH fluctuations and prevents your plants from assimilating the food you give them. Basically, you are wasting money on nutrients that your crop cannot eat, leading to stress, stalled growth, and frustratingly poor harvests.

The solution is to rebuild the water profile. Mineral EC Soft adds the exact load of Calcium, Nitrogen, and micronutrients needed to turn that "dead water" into the perfect vehicle for your cannabis fertilizers. It creates a stable environment where roots can feed aggressively and without blocks.

Quick spec sheet of Mineral EC Soft

• Brand: Maria Green
• Type: Water conditioner / Mineral additive
• Function: Increases EC in soft or osmosis water (
• Nitrogen (N): 5.4% (Total), 4.5% (Nitric)
• Calcium (CaO): 7.0% soluble in water
• Potassium (K2O): 1.8%
• Micronutrients: Iron, Manganese, Zinc, Boron, Copper, Molybdenum
• Application: Mix before adding base nutrients

Key advantages over using raw osmosis water

Many rookies make the mistake of mixing fertilizers directly into 0.0 EC water. This product acts as a bridge between your water source and a professional feeding chart.

• Prevents Calcium deficiencies: With 7% Calcium, it strengthens cell walls and prevents the dreaded "cal-mag" issues common in RO grows.
• Stabilizes the pH: By adding minerals, you create a buffer effect that prevents the pH from crashing or spiking dangerously in your reservoir.
• Improves nutrient uptake: A balanced initial EC allows the plant to osmoregulate better, drinking more water and eating more food.
• Versatility: It is compatible with almost all fertilizer ranges (except those containing oils or incompatible copper mixes).

Real benefits you’re going to notice

When you start your mix with Mineral EC Soft, you'll notice that your plants look greener and more turgid from the first weeks. The structure of the plant becomes more robust thanks to the Calcium, capable of supporting heavier buds later on.

Furthermore, you stop playing the guessing game with your PH meters. The stability provided by this additive means less time correcting the nutrient solution and more time enjoying the process. It’s the difference between a crop that barely survives and one that thrives with vigor.

How to use Mineral EC Soft step-by-step

1. Measure your water: Use an EC meter to confirm your water is soft (below 500 μS/cm or 0.5 EC).
2. Dosage: Add 0.5 ml per liter of water to your tank.
3. Mix and Measure again: Stir well and check the EC. It should have risen to a base level (usually around 0.4 EC).
4. Add base nutrients: Once the water is conditioned, add your Growth Fertilizers or bloom nutrients as per your schedule.
5. Maintenance: Maria Green recommends a cleaning watering (with enzymes or a cleaner) every 2 or 3 applications to prevent salt buildup in the substrate.

Frequently Asked Questions

Is this product necessary if I use tap water?

Only if your tap water is very soft (EC

Can I use it in hydroponics?

Yes, it is highly recommended for hydroponics using RO water, as these systems rely entirely on the grower to provide the mineral balance.

Does it affect the final flavor?

No, as long as you stop using it during the final flush. During the cycle, it actually helps the plant develop its full terpene profile by ensuring it's healthy.

Can I mix it with other brands?

Yes, Mineral EC Soft is a base conditioner. You can use it to prepare the water and then use fertilizers from other brands, although it works best synergistically with the Maria Green line.

Personal Experience of Pevgrow’s CEO (Alan)

"Living in an area with terrible tap water, I've been using reverse osmosis filters for years. In the beginning, I struggled with random yellowing and weak stalks until I realized I was starving the plants of Calcium and micros. Mineral EC Soft is now the first thing I touch when I fill my tank. I add it until my EC hits 0.4, and only then do I start with the rest of the recipe. It’s a game-changer for stability; the plants just look happier and 'pray' towards the light more often."