Bloombastic – 5.5 Liter

Atami Bloombastic is a highly concentrated bloom additive that combines a booster, accelerator, hardener, and flower enhancer in a single bottle. Designed for use during the flowering stage, it works across hydroponic, soil, and coco substrates to promote denser, heavier blooms and increased essential oil production.

Bloombastic – 5.5 Liter Specifications

The following table covers the key product specifications for Atami Bloombastic in the 5.5 Liter size, derived from manufacturer documentation and supplier data.

Why Choose Bloombastic

Bloombastic is positioned as an all-in-one bloom supplement that replaces the need to run separate booster, accelerator, hardener, and flower-enhancer products through the late flowering window. Here is what makes it distinct based on Atami’s own product documentation:

• Four functions in one bottle. Bloombastic acts simultaneously as a bloom booster, bloom accelerator, bloom hardener, and flower enhancer. Growers running tight feeding programs can consolidate these roles into a single additive rather than managing multiple products with overlapping windows.
• High P-K loading relative to competing biostimulants. According to Atami, Bloombastic contains at least 50% more phosphorus and potassium than comparable biostimulant products. The elevated potassium level directly supports the cell-stretching mechanism that increases the intake capacity of individual flower cells.
• Organic-based inputs alongside concentrated mineral nutrition. The formula includes sea kelp and clay minerals, giving it an organic-based character while still delivering the concentrated mineral nutrition that heavy-feeding crops need at peak bloom.
• Stress buffering via enzyme simulation. Bloombastic is described as simulating the enzyme process, which reduces plant sensitivity to environmental stressors — specifically heat, dry air, high light intensity, and nutrient imbalances. This can be practically relevant in late-cycle grow rooms running elevated temperatures and light levels to push final flower density.
• Substrate-agnostic application. The product is explicitly formulated for use in hydroponics, soil, and coco, which means it fits into most grow setups without a separate substrate-specific version.

Best Uses for Bloombastic

Bloombastic is a late-flowering supplement. It belongs in the final weeks of the bloom phase, not throughout the entire grow cycle. The following use cases reflect what the canonical product description and category classification support:

• Peak bloom stage supplementation in hydroponic systems. Because it is highly concentrated and targets flower cell expansion, Bloombastic is most commonly added during the last four to six weeks of flowering in recirculating DWC, NFT, or flood-and-drain systems. The high P-K content supports the energy demands of rapid flower development.
• Coco coir grows where bloom hardening is a priority. Coco retains moisture well but can deplete potassium quickly at high feeding rates. Adding Bloombastic during the ripening window addresses this while simultaneously supporting bloom compaction and essential oil production.
• Soil grows where the grower wants to increase flower density without stacking multiple products. In soil-based programs, Bloombastic can replace or consolidate separate PK boosters and biostimulants. The sea kelp and clay mineral inputs complement soil microbiology rather than working against it.
• High-intensity grow rooms with elevated temperatures or light levels. The enzyme-simulation mechanism in Bloombastic is specifically noted to reduce stress sensitivity under heat, dry air, and high light conditions — all common in rooms running HPS or high-output LED fixtures at peak intensity during late bloom.
• Commercial and large-scale production runs. The 5.5 Liter container size is suited for operations running large reservoir volumes or multiple concurrent cultivation rooms where small retail bottles would create handling overhead. At this volume, per-application cost is reduced relative to smaller sizes.

Compatibility

Atami Bloombastic is formulated to work across the three main growing substrates used in controlled-environment agriculture. According to the manufacturer, it is suitable for:

• Hydroponic systems — compatible with recirculating and run-to-waste hydroponic setups where nutrients are delivered in solution. Add to the reservoir at the recommended dose rate and verify EC before feeding.
• Soil grows — can be incorporated into soil-based feeding schedules. The organic-based ingredient profile (sea kelp, clay minerals) is well-suited to soil environments where biological activity plays a role in nutrient availability.
• Coco coir substrates — works in both hand-watered and automated coco systems. Coco growers benefit from the high potassium content given coco’s tendency to buffer and hold potassium differently than soil.

Bloombastic can be used alongside base nutrients and other Atami additives. If you are running other high-P-K supplements in your late-bloom stack, monitor EC closely, since Bloombastic contributes meaningfully to overall nutrient loading. For growers also using root-zone products, see our Heavy 16 Roots for a root-support option that can complement a late-bloom feeding program.

Dosing Guidelines

Bloombastic is a highly concentrated additive. Start at the low end of the manufacturer’s recommended dose range and adjust based on plant response and runoff EC. The following steps apply to all substrate types unless otherwise noted in current Atami documentation:

1. Shake or invert the container several times to ensure the concentrate is fully homogenized before measuring. Concentrated formulas can separate during storage.
2. Measure the dose using a calibrated syringe or graduated measuring cup. Do not estimate; concentrated products have a narrow margin between effective dose and over-application.
3. Add Bloombastic to your nutrient reservoir or hand-watering solution after mixing your base nutrients. Add it to already-diluted solution rather than concentrated stock to avoid precipitation.
4. Adjust pH to the appropriate range for your substrate — typically 5.5–6.0 for hydroponics and coco, 6.0–6.5 for soil — after adding all supplements.
5. Check EC to confirm total nutrient load is within target range for your current bloom stage. Bloombastic contributes to overall EC; account for it in your target window.
6. Begin Bloombastic additions at the start of peak bloom and continue through the late flowering period. Discontinue use during flush if you run a pre-harvest flush protocol.
7. Monitor plant response after the first two to three applications. If tip burn or other signs of excess appear, reduce dose. If plants are tolerating well and flower development is on track, maintain the rate through the final weeks.

For growers who also use carbohydrate supplements during bloom, a product like Earth Juice Hi-Brix Molasses can be run alongside Bloombastic to support energy availability during peak flower development, as long as total EC stays within range for your crop.

Sources & Further Reading