Includes (2) replaceable blades: Stainless Steel for glass tanks and ABS plastic for acrylic tanks. Recommended to replace blades every 3-6 months to maintain optimal algae scraping In some instances, a new tank mate will be chased and harassed by one or all of your existing tank mates. It also has a little brush attachment that’s great for cleaning the corners near the silicone seal.

You get two scraping blades, a metal one and a hard plastic one. The metal blade is great on glass but it could easily gouge and scratch acrylic tanks. You'll have to wait for almost all that mixing water to evaporate before the concrete will be firm enough to mag float. But frankly, I’m not crazy about the cleaning power of the scrubber side of the FL!PPER. It seemed like it was taking forever, even to do a fairly small area.

Drip Method

One of the best ways you can learn how to finish concrete smooth is by watching me using a steel trowel to finish this small concrete floor. I've been using a mag float and a steel hand trowel to finish concrete smooth for many years. It was really hard to just let my tanks look terrible for two weeks, but I did it in the name of helping my readers. So, I hope this helps! Magnetic Scraper Test 1: Brown Algae

This little scraper is kind of simple, but it’s also really effective. It utilizes super thin razor blades that do a great job scraping off both soft or tough algae. It also comes with a small brush attachment that’s good for getting into tight corners. If you steel trowel the surface too early, you risk "sealing" off the surface and trapping some moisture that is still trying to rise and evaporate out of the concrete.These three videos and my explanation should help you understand how to finish concrete smooth using a hand trowel. Algae scrapers are really handy tools to keep the glass/acrylic crystal clear. It always surprises me when I think my inside glass is “clean.” Test 1: The Aqawing was able to get through the softer brown algae, but it took a lot more swipes to get even big open areas clean. So, we also bought two different styles of long-handled scrapers that are meant for getting hard to reach places in an aquarium.

std::copysign is the only portable way to manipulate the sign of a NaN value (to examine the sign of a NaN, std::signbit may also be used). If you have a large tank and get a scrubber pad with a magnet that isn’t strong enough, it may attach securely, but it will surely not exert enough pressure to do the cleaning job. hygger Carbon Fiber 6 in 1 Aquarium Cleaning Tool Kit Algae Scraper Scrubber Pad Sponge Telescopic... There are two different sponge attachments, a flat one and one that’s shaped to fit into the tank corners. The flat sponge is good on soft algae but it couldn’t make a dent in the green spot algae. It’s possible to scratch your tank if you use an algae scraper improperly, especially if you have an acrylic tank. Make sure to follow all the manufacturer’s instructions. Be especially careful while cleaning along the substrate. Getting even a single grain of sand trapped between the scrubbing pad and the glass can cause major scratching. How to Choose an Algae Scraper

Why Acclimate?

In fact, for some reason, the green spot algae in that tank is the hardest to scrape in the whole house.

As for scraper blades, metal scrapers are used for glass tanks, and plastic scrapers are used for acrylic tanks. Using a material intended for a glass tank on an acrylic one will cause the most unsightly scratches that are mostly irreversible. So, after trying out the magnetized scrapers on the soft brown algae, we then tried them on the green spot algae to see how they did on the really tough stuff. Long-Handled Scrapers If you pour your concrete really wet (or loose) this will greatly extend the amount of time you have to wait to start finishing. The corner-shaped attachment didn’t do me much good at all. The swivel it’s on is too loose so you can’t actually scrub with it except at really awkward angles. I really like this Fzone algae scraper. It doesn’t have a whole lot of bells and whistles, but it does a great job, even on super tough green spot algae.

The long-handled scrapers are a toss up for me. I like some of the different attachments on the Hygger kit, but I also found that the Fzone scraper was simple yet extremely effective.