Can I cut this in half and give each half to a betta and expect it to last a week?

I think so. I put a while one in my 10 gallon with 5 betta sized fish and it lasted 2-3 weeks.

Can this be cut smaller? I have a small 3 gallon tank with one fish. Can I cut this into 1/4 and only drop 1/4 of it at a time?

Thank you for your interest in this Tetra product R Queen! Yes, you can cut it into four quarters, and use just 1/4, in fact we highly recommend that in these smaller tanks. Keep the packaging, and aluminum for the date codes, and store it in a Ziploc back in your refrigerator for up to one month after opening it for the remaining portion. Please note that this food does NOT release on its own, many customers misunderstand the purpose of this block. The fish must swim to it to nibble on it. Therefore, one fish will not make a big dent in a whole block. Also, some tips customers have provided us regarding going away and leaving their fish include doing a partial water change a couple of days prior to leaving, and breaking a small piece off of this food and crumbling it for one or two meals before leaving as well. This helps the fish to understand this is their new food source. Should you need more personalized assistance, please don't hesitate to email me at PHGAmazon@spectrumbrands.com.

would this work for African Dwarf Frogs?

It would, if it worked at all. The fact is, when I came back after five days, the block had not dissolved, so basically my fish had gone five days without food.

Does anyone actually have experience of their Betta eating this?

Bettas can be picky eaters. If you need to use this while out of town, break some tiny pieces off and feed it with the regular food for a few days prior to trying the block. Then a couple of days prior to leaving, break a piece off and let it drift down to see if he follows it. Watch him for a couple of days to see if he'll nibble on it.

ASIN	B0798GRQF1
ASIN	B0798GRQF1
Age Range Description	Adult
Best Sellers Rank	#208,858 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,885 in Aquarium Fish Food
Brand Name	Tetra
Breed Recommendation	Large Breeds
Country of Origin	Germany
Customer Reviews	3.9 3.9 out of 5 stars (10)
Date First Available	January 24, 2018
Date First Available	January 24, 2018
Directions	Remove foil seal and tray. Drop feeding block into the aquarium. See chart for number of blocks recommended. Depending on the number of fish in your tank, the feeder block might not be fully consumed when you return from vacation. The feeder does not disintegrate on its own; food is released as fish nibble on the block. If there is food left you can leave the block in the tank and resume normal fe…
Included Components	48 feeders
Item Dimensions LxWxH	13.75 x 7 x 6.5 inches
Item Package Dimensions L x W x H	15.39 x 12.36 x 7.8 inches
Item Weight	4.16 Pounds
Item model number	77150
Item model number	77150
Manufacturer	Spectrum Brands Pet LLC
Manufacturer	Spectrum Brands Pet LLC
Model Name	Tropical
Number of Items	48
Product Dimensions	13.75 x 7 x 6.5 inches; 4.16 Pounds
Size	1.06 Ounce (Pack of 48)
Specific Uses for Product	Active
Target Audience Keyword	Fish

Tetra 77150 Tropical 48 Count Vacation Gel Feeder Block, One Size (Pack of 48)

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