CYCO Grow B – 20 Liter

CYCO Grow B is the second part of the two-component Grow A & B base nutrient system designed for the vegetative growth stage. It delivers a balanced blend of primary, secondary, and micronutrients — including potassium, magnesium, phosphate, and calcium — that are highly bioavailable and formulated to support vigorous plant development while helping plants manage environmental stresses. The 20-liter size is suited for commercial operations and serious hobby growers who want to reduce how often they restock.

CYCO Grow B – 20 Liter Specifications

The table below lists the confirmed specifications for CYCO Grow B in the 20-liter size. NPK values and nutrient element details are derived from the manufacturer product description. Weight reflects the shipping weight recorded in the product data.

Specification	Value
Brand	Cyco Platinum Series
Product	Grow B (Part B of two-part system)
Volume	20 Liters
Weight (shipping)	50 lb (approx.)
Key Nutrients	Potassium, magnesium, phosphate, calcium
Growth Stage	Vegetative (Grow)
Use With	CYCO Grow A (always used as a pair)
Category	Base Nutrients

Why Choose CYCO Grow B

CYCO Grow B is part of the Platinum Series, a two-part base nutrient program developed to give growers a complete and balanced nutrition profile during the vegetative phase. Here is what the canonical product data supports:

• Complete macro and micronutrient coverage. Grow B provides potassium, magnesium, phosphate, and calcium — nutrients that work alongside the complementary elements in Grow A to cover primary, secondary, and trace mineral needs for the vegetative stage.
• Highly bioavailable nutrient forms. According to the manufacturer description, nutrients in the Grow A & B system are formulated to be readily absorbed and utilized by the plant, reducing the likelihood of nutrient lockout when mixed and dosed correctly.
• Magnesium for enzyme activation. The product description specifically notes that magnesium in the formula helps activate the plant enzymes required for growth — an important function in chlorophyll production and energy transfer during the vegetative phase.
• Environmental stress support. The formula is described as aiding in fighting environmental stresses and enhancing vigor, which is relevant for growers running challenging environments or pushing high grow-room temperatures.
• 20-liter bulk size. The 20-liter container reduces how frequently commercial growers need to reorder. It is the largest size in the Grow B lineup and is appropriate for nutrient rooms supplying multiple reservoirs or large recirculating systems.

Best Uses for CYCO Grow B – 20 Liter

CYCO Grow B is a base nutrient intended for use throughout the vegetative growth cycle. The following use cases reflect the product category, volume, and manufacturer description.

• Recirculating hydroponic systems (DWC, NFT, flood-and-drain). Grow A & B is designed to be fully water-soluble and highly bioavailable, making it well-suited for recirculating systems where consistent nutrient availability and low residue buildup matter.
• Coco coir and soilless media. The balanced formula is appropriate for coco and perlite grows where the grower is responsible for supplying all nutrients, as opposed to pre-amended living soil.
• Commercial and large-scale grows. The 20-liter size makes it practical for nutrient rooms supplying multiple reservoirs. Buying at this volume reduces per-liter cost and reduces the number of resupply orders needed across a growing cycle.
• Multi-strain vegetative rooms. Because Grow A & B covers primary, secondary, and micronutrients in a balanced two-part system, it provides a stable nutritional baseline that works across different plant varieties without requiring strain-specific adjustments to the base program.
• Growers supplementing with Cyco’s full Platinum Series line. Grow A & B is designed as the base of the Cyco Platinum Series program, meaning it is formulated to be stacked with Cyco additives and boosters without creating nutrient imbalances.

CYCO Grow B vs Similar Base Nutrients

CYCO Grow B occupies the two-part base nutrient category alongside other multi-part systems designed for the vegetative phase. The main points of comparison for a grower evaluating Grow B against alternatives:

Two-part vs. three-part systems. Many base nutrient programs use a three-part structure (grow, micro, bloom) that requires the grower to adjust ratios at each stage. Cyco Grow A & B is a two-part system for the vegetative stage specifically, which simplifies the mixing process during veg while keeping part-A and part-B elements separated to prevent precipitation in concentrate form.

Bioavailability focus. The manufacturer description emphasizes that nutrients in Grow A & B are highly bioavailable and easily absorbed. Growers comparing CYCO Grow B to other base nutrients should check whether competing products make similar claims and whether those claims are backed by chelation technology or specific nutrient form choices.

Volume and cost per liter. At 20 liters, CYCO Grow B is competitive with other commercial-volume base nutrients. Growers running large operations who also use root inoculants or organic amendments alongside their base program might compare this against products like Advanced Nutrients Tarantula, which targets a different function (root colonization) but is part of a similar premium nutrient-brand ecosystem. For base nutrition specifically, the relevant comparison is system-to-system: evaluate whether the A+B approach fits your mixing protocol and whether the 20L size aligns with your reorder cadence.

Compatibility

CYCO Grow B is always used as Part B of the Grow A & B pair. The two parts must be used together — Part A provides the calcium-heavy fraction, and Part B provides the complementary nutrient fraction including potassium, magnesium, and phosphate. Mixing them separately into the reservoir (rather than combining concentrates directly) prevents precipitation.

Hydroponic systems: Compatible with recirculating deep water culture (DWC), nutrient film technique (NFT), ebb-and-flow (flood-and-drain), and top-feed drip systems. The product description indicates nutrients are balanced and highly bioavailable, which suits low-residue recirculating setups.

Soilless and coco media: Suitable for use in coco coir and perlite blends, rockwool, and other inert growing media where the grower supplies all nutrients from the reservoir.

Cyco Platinum Series stacking: Grow A & B forms the base of the Cyco Platinum Series program and is formulated to work with Cyco additives and boosters. Growers using the full Platinum Series line should follow Cyco’s published feed schedule to keep EC and pH within the target window.

pH range: As with most hydroponic base nutrients, maintain reservoir pH in the 5.5–6.5 range (5.5–6.2 for most hydro systems, up to 6.5 for coco or soilless). Monitor EC and adjust dose rate based on plant stage and system volume.

If you are also using organic inputs such as Earth Juice Hi-Brix Molasses as a supplemental carbohydrate source, add these to the reservoir after mixing and pH-adjusting your base nutrients, and verify that the combination does not push EC above the target range for your growth stage.

Dosing Guidelines

The canonical product data does not include a specific dose rate in ml-per-liter or ml-per-gallon. Use Cyco’s published feed schedule (available on cycoflower.com) for the exact dose rate for Grow B at your growth stage and system type. The general approach for a two-part base nutrient system is described below.

1. Start with pH-adjusted water. Fill your reservoir or mixing vessel with fresh water. Adjust source water pH to approximately 6.0–6.5 before adding nutrients. This prevents inaccurate pH readings caused by the nutrients themselves.
2. Add Grow A first. Measure the recommended amount of CYCO Grow A per liter (or per gallon) and add it to the reservoir. Stir or circulate to mix thoroughly before adding Part B.
3. Add Grow B separately. Measure the same recommended dose of Grow B and add it to the reservoir after Grow A is dispersed. Never mix the two concentrates directly together — always dilute each part separately into the water volume.
4. Check EC. After mixing, measure the electrical conductivity (EC) of the nutrient solution. For vegetative growth, a typical EC range is 1.2–2.0 mS/cm depending on plant variety and growth stage. Adjust dose rate up or down to hit your target EC.
5. Adjust final pH. After all nutrients and additives are mixed in, check and adjust pH to your target range: 5.5–6.2 for most hydroponic systems, or 5.8–6.5 for coco and soilless mixes.
6. Monitor and top off. Check reservoir EC and pH at least every 48 hours during the vegetative phase. Top off with plain pH-adjusted water between full reservoir changes to maintain consistent nutrient concentration as plants uptake water faster than nutrients.

How to Use CYCO Grow A & B

The steps below describe how to integrate CYCO Grow B into a standard hydroponic reservoir build. Always use Grow B paired with Grow A — neither part delivers a complete nutrient profile on its own.

1. Prepare your workspace. Gather your measuring equipment: a calibrated syringe or graduated measuring cup for accurate volume measurement, an EC meter, and a pH meter. Rinse measuring tools before use to avoid contamination between nutrient concentrates.
2. Fill reservoir with fresh water. Use reverse osmosis (RO) or low-EC source water when possible. Start with your full reservoir or mixing volume before adding nutrients — dilution order matters for a two-part system.
3. Dose Grow A first, then Grow B. Following Cyco’s published feed chart for the vegetative stage, measure the appropriate volume of Grow A and stir it into the reservoir thoroughly. Then measure the same dose of Grow B and add it separately. Circulate or stir well between additions.
4. Add any supplemental additives. If you are using Cyco Platinum Series additives or other compatible supplements, add them after the base nutrients are fully mixed. Growers using a microbial root inoculant (such as those in the Heavy 16 Roots category) should add microbials last and after pH adjustment to protect live cultures.
5. Verify EC and pH. Test the final nutrient solution for EC and pH. Adjust pH using a compatible pH up or pH down product. Target EC and pH should match Cyco’s vegetative-stage recommendations on their feed schedule.
6. Introduce solution to your system. Once EC and pH are confirmed, introduce the mixed solution to your reservoir or irrigation lines. For recirculating systems, allow the pump to circulate for 10–15 minutes before taking a final EC/pH reading to confirm the solution is well-blended.
7. Store concentrate properly. Keep the Grow B container sealed when not in use. Store in a cool, dark location away from direct sunlight and freezing temperatures. Shake or stir before each use if any separation or settling is visible.

Sources & Further Reading