White salt like thing is buildup in my solution mix , what should I do ?

It the salt like buildup is powdery particles and in small quantity, it may have happened either because of excess nutrients or because of precipitation (K is prone to precipitation). Add only water (without nutrients) to the tank and see if it dissolves the excess nutrient. If it does not, change the solution. if the white built us is like froth/bonded together and in large quantity, it is most likely some algae/fungus (it can happen if water is stationary, in DWC, and not aerated enough). The ideal solution is to discard the solution, clean the tank and prepare the solution again. Alternatively, add 2 ml of 2% hydrogen peroxide per liter of water and the white mass should clean up.

Do i need to add all three solutions in water at a time..?

Yes. However, sequencing is important. You should add N, followed by K and then P. These solutions are shipped separately as otherwise, they can react leading to interlocking of some nutrients. Wrong sequencing may also result in the interlocking of some nutrients.

I want to grow mint in hydroponics. which do you suggest is better npk or symphony. and please let me know the usage if it is symphony.

None of the two. Greens combo pack will give you best results for Mint. To begin with add 2 ml of greens and 1 ml of Nutes per liter of water. Increase the dosage to recommended dose (on label) gradually over a period of 4-6 weeks.

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City Greens Advance Hydroponic Nutrient - Grow, Flora. & Thrive - Concentrated Liquid fertilizer for Complete Plant Nutrition - Total 600ml (200ml Bottle Each Grow, Flora, & Thrive).

City Greens Advance Hydroponic Nutrient - Grow, Flora. & Thrive - Concentrated Liquid fertilizer for Complete Plant Nutrition - Total 600ml (200ml Bottle Each Grow, Flora, & Thrive).

Product ID: 76129936

Details

Brand
City Greens
Item Form
Liquid
Liquid Volume
0.6 Litres
Number of Packs
6
Specific Uses For Product
Plant Growth

💧Fast-absorbing liquid formula

🔬Lab-grade chelated micronutrients

⚖️pH balanced for optimal uptake

₨23890

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Description

🌿 Unlock your plants’ full potential with City Greens’ powerhouse trio!

PRECISION P H CONTROL - Optimized pH ensures maximum nutrient uptake and healthier roots.
VERSATILE APPLICATION - Perfect for hydroponics, cocopeat, and soil-based farming—grow anywhere, anytime.
RAPID NUTRIENT ABSORPTION - Liquid nutrients absorb faster than powders, accelerating plant development.
TRUSTED LAB GRADE QUALITY - Chelated micronutrients prevent nutrient lock, guaranteeing consistent plant vitality.
TRIPLE ACTION GROWTH BOOST - Balanced Grow, Flora & Thrive formula fuels foliage, blooms, and roots simultaneously.

City Greens Advance Hydroponic Nutrient is a concentrated 600ml liquid fertilizer set (200ml each of Grow, Flora, and Thrive) designed for comprehensive plant nutrition. Engineered with lab-grade chelated micronutrients and pH-balanced formula, it supports lush foliage, vibrant blooms, and robust roots. Ideal for hydroponic, cocopeat, and soil farming, this fast-absorbing nutrient trio ensures efficient uptake and healthier plants, backed by dedicated customer support.

Specifications

ASIN	B076MYGBF9
Best Sellers Rank	#8,131 in Garden & Outdoors ( See Top 100 in Garden & Outdoors ) #39 in Nutrients & Additives #638 in Indoor Plants
Brand Name	City Greens
Country of Origin	India
Coverage	Medium
Customer Reviews	4.0 4.0 out of 5 stars (655)
Item Form	Liquid
Liquid Volume	0.6 Litres
Manufacturer	Vertical Farming Technologies Private Limited
Mixing Ratio	1:1:1
Number of Packs	6
Specific Uses For Product	Plant Growth
Target Species	all plants
Unit Count	600 Milliliters

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