Hmm, seems like it could be a decent idle fishtank game akin to Insaniquarium, but I'm not getting hooked in anyway currently. Yes, it is in alpha so I shouldn't expect too much, but still, there should be some sort of core appeal that shines through even early on that intrigues me, but I can't see it as the game just feels rather monotonous, lacking that addictive progression and evolution that these games typically deliver.
A big source of confusion and disappointment for me is the way that the game makes you purchase DNA: you need to purchase 3 to complete a level, with each purchase increasing the difficulty. Ideally, this should be a source of gripping tension and risk/reward: like maybe the user is a on a time limit and would never get enough in time, but purchasing DNA makes it so your blood cells produce more money, so you're pressured into increasing the difficulty to get that benefit to beat the level. But no, you can just play it safe and save up money to purchase all 3 DNA at once: how boring! You can just skip seeing all of the interesting enemies!
Also something to look out for was that by requiring the user to mash-click on enemies, that could lead to misclicks which lead to spending money on oxygen that you didn't mean to: yes it's a minor amount, but it still feels bad to have to be so cautious to avoid misspending.