Bio-Bizz CalMag – Organic Mineral Booster Essential for RO Systems or Low-Mineral Tap Water

Biobizz Calmag

Calcium and magnesium are essential for proper plant growth, yet deficiencies can occur in certain crops (due to soft water or RO).

Biobizz Calmag works wonders for any gardener that needs an extra boost of these key elements, using 100% natural ingredients and a “friendly”, nitrogen-free formula.

• Prevent calcium and magnesium deficiencies
• Essential in coco
• Organic, nitrogen-free formula
• Dilution rate: 0.5-1.5ml per Litre

Key Benefits of BioBizz Calmag

Fixes soft water issues – essential for RO systems or low-mineral tap water
Strengthens cell walls – supports immunity and resistance to stress
Improves photosynthesis – thanks to magnesium’s key role in chlorophyll
Prevents lockout during bloom – maintains nutrient balance even when PK boosters are added
100% organic – fully natural and safe for use in soil, coco, or hydroponics

How BioBizz Calmag Works

Soft or purified water lacks essential secondary nutrients like calcium and magnesium.

These are vital for overall plant strength, nutrient transport, and chlorophyll production. Without them, plants suffer stunted growth, yellowing leaves, and lower yields—especially during heavy feeding in flower.

BioBizz Calmag delivers a precise organic dose of Ca and Mg to correct and prevent deficiencies, keeping plants firing on all cylinders.

It also works to prevent lockout caused by excess potassium and phosphorus during bloom—something most mineral PK boosters can’t do naturally.

It’s thinner than most BioBizz nutrients, so it can even be used in hydro systems with care.

Recommended Dosages

Prevention (Soil): 0.3 – 0.8ml/L
Prevention (Hydro/Coco): 0.5 – 1ml/L
Correction (Soil): 0.3 – 1.2ml/L
Correction (Hydro/Coco): 0.5 – 1.4ml/L

Stir well before adding other nutrients.

Adjust pH to around 6.5 for soil or 5.8 for coco/hydro using BioBizz pH Up or BioBizz pH Down.

Pair with These for Best Results

Ecothrive Neutralise – Neutralises chlorine to protect beneficial microbes
Ecothrive Biosys – Top-up microbes every 10–14 days
Ecothrive Charge – Boost microbial life and nutrient cycling

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DISCREET PACKAGING / FAST DELIVERY / HUGE STOCK  

For UK we accept PayPal, money orders, personal cheque, bank transfers or credit cards. Money orders, cheque or cash sent must include a reference or eBay username plus the item number, Postal orders and cash must be sent recorded delivery as we cannot take responsibility for lost money. 

Alternatively, you are more than welcome to collect your order from our premises in Cambridge and browse our shop which stocks over 1000 products. 

Delivery times: Please see our feedback for customer’s comments on the speed of delivery. We carry a huge stock level and most courier orders placed before 4 pm are received the next day. 

Please click on ‘Request total from seller’ for multiple items on the payment page. You will be charged the highest postage cost for 1 item and then £1 for each additional item. You will not pay more than £10 for delivery (ex. heavy items i.e. soils, lights etc.) 

Items less than 2kg in weight can be sent throughout the UK and N.Ireland at our standard postal rates by Royal Mail.

Items over 2kg are sent by courier where a delivery surcharge applies to:  

Highlands & Isle of Wight: Before 16:00 only £16 up to 20kgs in weight for post codes: AB37-38,41-45,51,56, FK19-21, IV1-28,30-37,40,54,63 KW1-3,5-14, PA21-40, PH15-26,30-41,49,50,TD, PO30-41 

Scottish Offshore Islands: Two Day Only £20 up to 20kgs in weight for post codes: HS1-9, IV41-56, KA27-28, KW15-17, PA20,40-49,60-78, PH42-44, ZE1-3 

Northern Ireland £25 up to 10kg in weight, £1.25 per kilo thereafter 

Republic of Ireland £35 up to 5 kilos in weight, £2.75 per kilo thereafter

Offshore British mainland please message for a quote 

If you need clarification on the weight of your order please message first for a quote. If you have any further questions or need assistance, feel free to contact the Camgrow Team.