I need an advice... I will go in a holiday in May and I don't know what to do with water changes... A friend of mine will come to my place daily and feed them, but I wouldn't like to change their water because I'm sure she will not handle the situation properly.
One betta lives alone is in a 5 gallons tank, filtered and heated, with one natural plant. In this tank I do 2 water changes per week, one 50% and the other 100%.
The other betta lives togheter with 3 neons, 2 danio and 2 gouramis in a 15 gallons tank, filtered and heated. Here I do one regular water change per week, about 50%.
The problem is that I will be gone from 28 May to 5 June. I think the big tank will be ok, but I am worried about the smaller one. I will do a 100% water change on 27 May and until on 5 June there will be no water changes. Will my bettas be ok or should I try to teach my friend how to do a 50% water change? What do you think? I'm affraid that my friend will not have enough patience to do things right... I mean to measure the old and new water temperature, to add the conditioner and to acclimate my betta. What should I do? I will be far away from my country..