Gillie
Aquarium Advice Addict
Blackworms and tubifex are the same worm. I along with multitudes of people have never had problems with them, the biggest thing is keeping their water clean, the whole lot can sour in a couple days if you don't. They aren't really an ideal size for scarlets because most are as big or bigger than the fish, unless you will be cutting them into more manageable pieces. Frozen or live bbs, grindal worm and smaller whiteworms are better choices.
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