Top 5 Misconceptions About White Tanks
Author: Dr. Saleem Iqbal (PhD, Aerospace Materials, Netherlands)
In this article, we will cover top 5 misconceptions about white water tanks with scientific basis and other visual proofs. Keep in mind white water tanks are manufactured using blow mold process which we already have explained in our previous article.
When it comes to water storage, the biggest risk is not choosing the wrong brand for water tank — it is trusting the wrong information. Blow-molded white tanks with fancy layer counts, shiny white colors, and low price tags may seem like a smart buy, but once you understand how they’re made and how quickly they degrade, the picture becomes clear: they’re built for short-term sales, not long-term performance.
As an expert in different high performance materials, I’ve seen how cleverly blow-mold white water tanks create a false sense of quality while compromising strength, hygiene, and lifespan. This blog uncovers the top five myths surrounding these tanks — helping you avoid costly mistakes and choose a water tank that truly keeps your family safe, your water cool, and your investment protected for years.
Misconception No. 1 - White Color Mean 100% Food Grade Material
The Reality:
White color is not always an indication of 100% food grade material. Many manufacturers use recycled white plastic — often from shampoo or cream bottles to reduce the cost of the blow mold tanks. While these look white and clean materials, but these materials contain impurities and lose mechanical strength when remelted.
Misconception No. 2 - More Plies Mean More Thickness and Higher Weight
Reality:
In blow mold water tanks, “layers or plies” often serve as a marketing gimmick. Even tanks advertised as 5-layer or 7-layer have only 3 layers. In many cases, tanks marked with 7 layers have less weight than 2 layer water tank. Adding more number of layers without adding the thickness and weight of the tank is just a scam and nothing else.
Misconception No. 3 - Stronger Tank with Better Quality
Reality:
Most of the times, customer check the strength of the tank by pressing its body. It is a common misconception that a tank which cannot be bend inward is stronger and better in quality which is a totally wrong judgment method. A tank made from overly stiff or brittle plastic may resist slight deformation but cracks quickly under UV exposure or temperature cycling
Misconception No. 4 - White Color and More Plies Mean Heat Resistant Water Tank
Reality:
It is very common misconception that 4 layers and 6 layers white blow mold water tanks are weather resistant tanks. In fact, these tanks can’t control the water temperature and they need external thermal jackets or water tank thermal covers to protect the water from getting hot in summer. White color reflects some sunlight — but only about 10-20 % of total solar heat. 70-80% heat is the conduction heat (heat flow due to temperature difference), which can only be controlled using a tank with built-in insulation or external insulation. As blow mold tanks don’t have any built-in insulation, therefore, water gets hot in summer and cold in winter in these tanks
Misconception No. 5 - White Tanks Have More Plies, Food Grade But Still Cheaper Than Blue Tanks
Reality:
If a product claims to use food grade material, extra layers, and extra weight, yet costs less than a roto-molded tank — something that is not logical. Short Warranty periods often reveal the truth — blow-molded tanks typically carry only 1 year to 3 year warranty, because they are not using pure material. The brands which are using pure materials, selling the tanks at much higher price than the brands which are using recycled materials
Conclusion
Buying a water tank should be a simple decision — but today’s market is overflowing with misleading claims, catchy labels, and marketing-based “technologies” that confuse customers rather than guide them. Terms like 5 Ply, 7 Ply, extra layers, food-grade, and heat resistant sound impressive, but many of these promises fall apart when examined through actual performance data. Unfortunately, thousands of homeowners end up paying for features that don’t exist or don’t deliver any real benefit.
Roto-molded tanks, especially those engineered with built-in insulation like InsuTank, offer the durability, temperature stability, and reliability that truly justify your investment. If you want a tank that stays strong, keeps your water protected, and delivers long-term value, choosing a scientifically designed solution is the only way forward. Make a confident choice today — your water, your home, and your peace of mind depend on it.