CYCO Bloom A 5 L (2/CS) - (Case of 2)

Potassium and Calcium Component of the Two-Part Bloom System, 5L (Case of 2)

The flowering stage shifts a plant's nutrient demand away from the nitrogen-heavy blend used during vegetative growth, and CYCO splits that shift across two concentrates rather than one. CYCO Bloom A 3-0-3 carries potassium, calcium, and magnesium in a bioavailable form, supporting element transport and enzyme activity through the flowering and fruiting stage.

This 5-liter size, sold in a case of 2, suits a regular indoor grower running Bloom A through an established flowering-stage program.

Key Features & Benefits

• 3-0-3 bloom formula — a potassium-calcium-focused ratio for the flowering and fruiting stage.
• Pairs with Bloom B — the A half of CYCO's two-part bloom system, not a standalone formula.
• Calcium for element transport — supports the normal transport and retention of other elements in plant tissue.
• Magnesium for enzyme activity — supports plant enzyme functions needed during bloom stage growth.

Who Should Use CYCO Bloom A

This suits growers in the flowering and fruiting stage running CYCO's two-part bloom system. Use it paired with CYCO Bloom B rather than as a standalone nutrient.

About CYCO

CYCO carries the same two-concentrate format from its Grow line into Bloom, splitting flowering-stage nutrients into an A and B bottle so calcium and phosphate stay at full concentrate strength until diluted together.

Frequently Asked Questions

What is the NPK ratio of Bloom A?

Bloom A carries a 3-0-3 ratio, providing potassium and calcium alongside a matching level of nitrogen. That ratio is formulated for the flowering and fruiting stage rather than vegetative growth.

Do I need to use Bloom A with Bloom B?

Yes, Bloom A supplies potassium, calcium, and magnesium, while Bloom B supplies a separate phosphate-forward range. Together they form the complete two-part bloom system; alone, neither provides a full flowering nutrient profile.

What role does calcium play during flowering?

Calcium supports the normal transport and retention of other nutrients within plant tissue. That role becomes more important as the plant builds flower and fruit structure during bloom.

When should I switch from Grow A/B to Bloom A/B?

Switch to the Bloom system once the plant transitions from vegetative growth into flowering. Bloom A and B are formulated for the potassium- and phosphate-heavy demand of that stage rather than vegetative growth.

How do I mix Bloom A into my reservoir?

Add it to your reservoir separately from Bloom B, fully diluting each before combining. Follow the label's dilution rate for your specific growing medium rather than a single fixed ratio.