STENDKERS AFTER 1 WEEK

What a difference a week makes its 7 days since i got the stendkers they were very scatty but now they have settled down. Thursday for the first time one of them came up and took food from my fingers now they are all feeding from my hand. They are still a bit shy flying across the tank at sudden moves but much better than they were. I have been doing 40% water changes every day and feeding them beef heart as i want them to grow quickly. Also i have put the ph up to 7.2 and tds is now 200 ppm even though i don't like the idea i was told they would grow quicker in more alkaline water. Here are some pictures of them feeding.