how much hardner do i need for 4.35 gallons?

The resin and hardener come as a 5 to 1 ratio. The resisnt exactly a gallon, the hardener in I think a 25 oz can goes with a “gallon” of resin so you would need to get five of these 25 oz cans of hardener and you’ll have 2/3 of a can of hardener left when you’ve used up your 4.35 gallons of resin.

I have used Envirotex Lite to coat tiles and it is crystal clear but SO long to cure. Question is if this is crystal clear? And how long to cure?

You have to use 207 hardner and 207 resin. Go to West system site and read about clear finish.

Do these containers come full ? appeared to have channellock marks on lid channel and there was hardener on inner lid. Missing 2 inches of product.

It doesn't matter. It was obviously opened by someone. Just return it and get another one or a refund.

My set of resin and hardener came today, but the hardener is brownish/redish in color when I pump it out. Is that correct or should I return it?

My hardener was slightly brownish when mixing with the resin, but after mixing it would clear up, and it would harden clear as well. If it is very pronounced, you may have a problem, but if it is just a tint that goes away when you mix, that seems to be normal. You may want to do a test on some scrap material to confirm.

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⚡ Cure fast, build stronger — don’t let slow hardeners hold you back!

COMPACT READY - 0.86 Quart size fits perfectly with #301 mini pumps for easy, mess-free application.
PRECISION MIXING - Optimized 5:1 resin-to-hardener ratio ensures maximum strength and rigidity.
LIGHTNING FAST CURE - Get projects done in record time with a 10-15 minute pot life at 70°F.
BUILT FOR DURABILITY - Creates a high-strength, moisture-resistant solid perfect for demanding environments.
VERSATILE PERFORMANCE - Ideal for powersports gear and any moisture-exposed surfaces needing reliable adhesion.

WEST SYSTEM 205B Fast Hardener is a clear epoxy hardener designed for rapid curing when mixed 5:1 with #105 resin. It delivers a rigid, moisture-resistant solid with a pot life of 10-15 minutes at 70°F, making it ideal for high-strength applications in powersports and moisture-exposed environments. Packaged in a convenient 0.86 quart size, it pairs seamlessly with #301 mini pumps for precise, efficient use.

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Manufacturer	WEST SYSTEM
Part number	205B
Item Weight	998 g
Product Dimensions	6.1 x 11.56 x 18.54 cm; 997.9 g
Item model number	205-B
Colour	clear
Material	Epoxy Resin
Item Package Quantity	1
Number of Pieces	1
Special Features	Fast Drying
Specific uses	Powersports Equipment, Moisture-Exposed Environments
Batteries included?	No
Batteries Required?	No

WEST SYSTEM 205B Fast Hardener, 0.86 Quart

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