Microbe Life Photosynthesis Plus – 2.5 Gallon

Microbe Life Photosynthesis Plus is a liquid biological additive for hydroponics and soil grows. It contains a novel culture consortium of stable microorganisms that improve your plants’ conversion of carbon dioxide into available carbon, while simultaneously establishing beneficial biology at both the foliar surface and root zone — even in media that starts completely void of organisms.

Photosynthesis Plus Specifications

Key physical and product specifications for the 2.5-gallon size. The single confirmed attribute from the supplier data is shipping weight; all other rows are derived from the product name, category, and description.

Specification	Value
Brand	Microbe Life Hydroponics
Product Name	Photosynthesis Plus
Container Size	2.5 Gallon (9.46 L)
Product Type	Biological Additive — Microbial Culture Consortium
Application Method	Foliar spray and root zone drench
Shipping Weight	23.32 lb
SKU	PH21383
Category	Nutrients & Additives — Growth & Bloom Boosters

Why Choose Microbe Life Photosynthesis Plus

Photosynthesis Plus addresses a specific gap in plant biology that most liquid additives do not target: the photosynthetic process itself and the microbial environment at the root zone simultaneously. Here is what distinguishes this product from a standard liquid feed or simple microbial inoculant:

• Dual-zone action. The microbial consortium works at both the foliar level and the root zone at the same time. Rather than being limited to soil drench or foliar application, growers can use a single product to support biology across the whole plant system.
• Stable organisms. Photosynthesis Plus contains stable microorganisms — meaning the culture remains viable through normal storage and handling conditions. This is a practical requirement in a commercial or indoor production setting where shelf life matters.
• Carbon conversion support. The organisms in the consortium improve the plant’s conversion of carbon dioxide to available carbon. This supports the photosynthetic machinery directly rather than just supplying macronutrients or trace elements.
• Works in organism-free media. Because the product rapidly establishes biology, it functions even when introduced into sterile or nearly sterile growing media — such as rockwool, coco, or certain hydroponic substrates — where no resident microbial population exists yet.
• Supports plant vigor and yield. By driving the biological processes behind photosynthesis and root zone health, the product is intended to accelerate plant development and improve the overall yield of a given crop cycle.

Best Uses for Microbe Life Photosynthesis Plus

Photosynthesis Plus is categorized as a growth and bloom booster additive. Its dual foliar and root zone application makes it useful across several growing methods and crop stages:

• Sterile hydroponic systems. Deep water culture, NFT, and nutrient-film systems run on inert substrates where no native microbial population exists. Photosynthesis Plus rapidly introduces a functional culture consortium into these environments, providing biology that would otherwise be absent.
• Coco coir and rockwool grows. Both media are largely sterile at the start of a crop cycle. Adding Photosynthesis Plus to the irrigation regime inoculates the root zone from early in the vegetative stage, giving the biology time to establish before the plant reaches peak demand during flowering.
• Foliar supplementation during vegetative growth. The foliar application pathway allows growers to support photosynthetic function directly through the leaf surface. This is particularly useful in growth stages where light intensity and CO2 utilization are highest.
• Transition from vegetative to flowering stage. The product is designed to optimize plant functions and improve yield, making the stretch period and early bloom a practical time to ensure the microbial consortium is fully established at the root zone.
• Soil and amended media grows. While it establishes biology in sterile media, Photosynthesis Plus also supports and complements existing microbial populations in living soil or amended media grows. It can be integrated into a broader biological program alongside other microbial inoculants.

Photosynthesis Plus vs Similar Products

The 2.5-gallon size (SKU PH21383) is available from multiple distributors. The same product was found listed at an alternate supplier at an effective price of $193.04, compared to the $205.40 price here. Both sources carry the same SKU. The price difference reflects distributor margin variation rather than any difference in formulation or packaging.

Within the broader category of biological additives and microbial inoculants, Photosynthesis Plus occupies a specific position: it is not a mycorrhizal inoculant and it is not a bacterial bloom activator of the type used primarily in soil. Its distinguishing claim is that the organisms it contains interact with the plant’s own photosynthetic machinery — a mechanism that is less common in standard microbial supplements, which tend to focus on nutrient solubilization or root colonization alone.

Growers comparing this to a straight root-zone inoculant should note the foliar application pathway is a separate functional benefit. Products that only target the root zone do not address the foliar biology component that Photosynthesis Plus is formulated to support. If you are building a full biological program, you may find it useful to pair this with a dedicated root-zone product such as a root-development additive for complementary action rather than using them as straight substitutes.

Compatibility

Based on the product description and its category classification as a general biological additive, Photosynthesis Plus is intended for use across a range of growing systems and media types:

• Growing systems: Suitable for hydroponic systems (DWC, NFT, drip, ebb-and-flow), coco coir, rockwool, and amended or living soil. The product is explicitly noted to establish biology even in media void of organisms, which covers sterile hydroponic substrates.
• Application modes: Can be used as a root zone drench (via reservoir addition or direct soil drench) and as a foliar spray. The dual application pathway is a stated feature of the product.
• Crop stage: Applicable from vegetative growth through flowering. The description references accelerating time to market and improving yield, which implies ongoing use through the full crop cycle rather than a stage-specific application.
• Other additives: As a biological additive, growers should observe standard precautions about mixing live microbial products with oxidizing agents or heavy doses of hydrogen peroxide, which can reduce microbial viability. If you are using a pest and disease control product in the same reservoir or spray program, check compatibility with live cultures before combining.

Manufacturer-published compatibility data beyond what is described in the product description is not available in this listing. Consult Microbe Life Hydroponics documentation for precise mixing rates and compatibility with specific nutrient lines.

Dosing Guidelines

Specific dose rates per gallon or litre are not included in the supplier-provided product description. The following guidance is based on the general application framework described for Photosynthesis Plus and the standard practice for liquid biological additives in this category. Always refer to the label on the container and the Microbe Life Hydroponics website for confirmed dose rates before first application.

• Measure carefully. Liquid biological concentrates should be measured with a calibrated syringe or graduated measuring cup. Overdosing a microbial product does not improve results and can affect reservoir chemistry.
• Add to pH-adjusted water first. Mix the concentrate into water that has already been adjusted to your target pH range (typically 5.8–6.2 for hydro; 6.0–6.8 for soil and coco) before adding other nutrients.
• Root zone application: Add to reservoir or use as a direct drench to the root zone according to the label rate. For hydroponic systems, add to the reservoir during each reservoir change or at the interval specified on the product label.
• Foliar application: Dilute to label rate in pH-adjusted water and apply as a fine mist to the leaf surface during the lights-off period or during low-light conditions to minimize photo-degradation of the organisms and reduce evaporation stress on the plant.
• Frequency: For establishing biology in sterile media, apply at each irrigation until the culture is established, then reduce to a maintenance dose as directed. In systems with active microbial populations, a maintenance dose is appropriate throughout the crop cycle.
• Storage: Store in a cool location away from direct sunlight. Biological products contain live organisms and can be affected by heat and UV exposure. Check the label for specific storage temperature recommendations.

How to Use Photosynthesis Plus

The following steps outline a standard approach for incorporating Photosynthesis Plus into an existing nutrient program. These steps follow the generic best-practice sequence for liquid biological additives in hydroponic and soil production systems.

1. Shake or agitate the container thoroughly before measuring. Microbial cultures can settle during storage; a consistent suspension ensures accurate dosing.
2. Prepare base water. Start with clean, dechlorinated water. If using tap water, let it sit 24 hours or use a carbon filter to remove chlorine, which can inhibit microbial viability.
3. Adjust pH before adding the product. Bring base water to your target pH (5.8–6.2 for most hydroponic systems; 6.0–6.8 for soil and coco). Adding biological products to correctly buffered water reduces stress on the organisms.
4. Measure the dose using a calibrated syringe or graduated cup at the rate specified on the product label. Do not estimate volume by eye for concentrated biological products.
5. Add to reservoir or spray tank and mix gently. For root zone application, add to the reservoir and allow circulation to distribute the product. For foliar application, load the diluted solution into a clean sprayer.
6. Apply to plants. For root zone: run the solution through the system as a normal irrigation event. For foliar: spray both the upper and lower leaf surfaces until the leaves are evenly misted. Apply during a lower-light period when possible.
7. Monitor plant response over the following 1–2 weeks. Look for changes in leaf color, root zone appearance, and overall plant vigor as indicators that the biological program is having an effect.
8. Adjust frequency as needed based on plant response, growth stage, and label guidance. Reduce to a maintenance schedule once the culture is established in the growing environment.

Sources & Further Reading